A Dutch software developer living in Chile
Friday, June 26, 2009
Using DNS as an authentication mechanism
Sometimes you need a construct for verifying a domain name ownership before you allow specific actions to be done to that domain. An example could be to send a bunch of mail to a specific domain. This will never be considered spam when you’re the owner of that domain, but it will be considered spam if that isn’t the case.
To validate domain ownership, you can check WhoIs records, ask for some proof of ownership, etc. But all these methods require human intervention. IRIS (Internet Registry Information System) isn’t done yet and won’t be globally available for the next few years, and we all probably have seen once the output of a WhoIs server. Try to parse that with a generic RegEx, no way in hell. So how do you automatically check if someone is really an owner of a domain?
Let’s just assume an owner has the power to change DNS records, anyone else hasn’t. SPF works that way, and I don’t think any sysadmin is going to give up those passwords easily. (It could compromise a lot!) So how about if you simply put a TXT record in DNS which has some custom format, like: “myapp:accountIdOfTheCustomer”. Guess what? This can be checked with a simple DNS query :)
The customer must logon to “myapp” and once it has done so, domain names can be checked against the account ID of that customer, so once you’ve got that in place, there’s no need to do any handwork. Requirement here is that the customer is in charge of their own DNS, but that should be the case most of the time. Since the customer doesn’t want to give anyone else access, they won’t put anyone else’s account number there… And you can put some salt in there if it’s needed…
Friday, June 26, 2009 7:18:24 PM (Pacific SA Standard Time, UTC-04:00)
Problems with EFS and developing software
EFS (Encrypting File System) is a great Microsoft solution to keep a secret a real secret, and to safeguard source files from (accidental) leaking when for example a notebook is stolen. The problem with writing software is that during testing, most of the stuff you create need to be accessed by processes that do not have access to your EFS key. Let me clarify…
Let’s say you are building a web site which you host in IIS. IIS runs in is own account and does not have access to your EFS key. You build your project, this creates a bin folder and a few DLLs within that folder. But guess what? The BIN folder is encrypted, and so are the DLL outputs. When running with a service in your local account, that’s not a problem. But when IIS tries to access those files, it will get a access denied exception because it can’t decrypt the DLL file. (Or any ASPX files for that matter.) This generally means that encrypting content files which need to be accessed by other services (running in their own process with their own account) is a bad idea. EFS will block access to these services. It becomes even more fun when COM+ DLLs are in play, etc.
The only solution is to do full hard drive encryption using BitLocker, it is not possible to do this any other way. Sure you can try to configure every account with keys, etc, or try to prevent the output binaries from being encrypted, but all this will become rather a management nightmare at the end. The reason that full hard drive encryption works, is that the main difference is that every account that is active on your system will have access to the files, in stead of your own account as the only account.
Friday, June 26, 2009 7:08:23 PM (Pacific SA Standard Time, UTC-04:00)
The Windows 7 madness has begun
Windows 7 is now available for pre-order…
I’ve been running Windows 7 RC for a while and I must say, it’s the best version of Windows I’ve seen, and I’ve seen them all. (All the way from 1.0)
If you’re living in one of the countries that the upgrade offer is valid for, you should consider getting your copy. If you haven’t switched to Vista yet, you might as well get Vista and a free upgrade to Windows 7 will be available once it is released. For the European community: Wait for the “E” edition, and sorry, no upgrade from Vista to Windows 7 E, only “Wipe & Load” migration is available. You may thank the European Union for that.
Partners will get Windows 7 at the end of July (at RTM date), and this means that I’ll be running Windows 7 RTM probably within a month… and since I’m in Chile, I don’t need the “E” version… You may get jealous now 
What I like about Windows 7?
- Windows Virtual PC with XP Mode,
- Seamless integration of apps within Virtual PC
- Windows Virtual PC using hardware virtualization
- OK, besides Virtual PC:
- Document libraries (which is a huge benefit for me)
- The new superbar
- And a lot more…
At the moment I have Windows 2008 on my workstation because I use Hyper-V as a virtualization platform and I have some features in IIS which aren’t available in Windows Vista. (Like the BITS server extensions.)
Windows Server 2008 R2 will also be released within the same timeframe. There’s a lot of improvements in this version of Windows Server, actually so much I’m surprised they simply call it an R2 version. What I like most is .Net for Server Core, which allows .Net to be run on a Core installation and allows you to create Windows Services or ASP.Net websites which now can run on Core.
Friday, June 26, 2009 10:14:16 AM (Pacific SA Standard Time, UTC-04:00)
Sunday, June 21, 2009
Installing SP2 on my server
When you want to install SP2 on a server, you need to make sure you’ve got enough space on your system partition. When I started with my server a couple of years ago, 20Gb for Windows 2003 was more than enough, but these days with Windows Server 2008, it isn’t. So I’m now having a server that has been upgraded a few times over the years, and has a system partition with too less space to install the latest service pack. That’s a bummer, and this blog post tells the story on how we recovered from this situation.
The server is a Dell PowerEdge 1900, 6x250 GB SATA2 HDDs, a Perc (PowerEdge RAID Controller), 8GB RAM, 2 Quad-code processors, etc. It even has a floppy drive :) I thought, because of the RAID controller, the hard disks are not reachable when starting the machine from a simple setup DVD. Luckily, Dell has a nice website which allowed me to find the drivers I needed. But once I started the server from the Windows DVD I was pleasantly surprised that Windows actually has drivers built in. Nevertheless, it never hurts to come prepared. But first things first.
It’s not possible to extend a system partition when you’re using it, nor is it possible to extend a partition when you don’t have the space free next to the partition. My system partition was the first 20GB block on my RAID10 volume, after that came a 450GB partition that was 80% full with fixed-size VHD files. I also had 1 RAID1 volume of 250 GB, about half full and a external disk that was about half full. Since I needed to delete the 450 GB partition, but I didn’t want to lose the data on it, I needed to move around some stuff. I started out by clearing out the 250 GB RAID1 volume. I moved 4 VMs to the external disk and the last one to the 450GB partition. Now I had 2 250GB disks empty, time to break the mirror.
Once that was done, I had 2 250 GB disks empty to hold my data. I moved the VMs to the other disk (using the export feature of Hyper-V) and after this (about 5 hours later in total) I had everything moved over so I could delete the partition. Restarted the machine from the DVD, select “Repair" and opened up a command prompt.
Diskpart is the new fdisk, and I’m glad that tool is here. With a few simple commands I deleted the 450GB partition, extended the system partition with 20 GB extra (and the file system also of course), and after this restarted the machine. Now I had a system partition which was 20GB bigger :)
I’ve installed SP2 without a problem, put the remaining space of the disk in a new partition and I’m now moving everything back into place. The system partition has now plenty of space to survive an upgrade to Windows Server 2008 R2, which will be here at the end of July. It was a lot of work, but it was worth it.
Sunday, June 21, 2009 12:58:34 PM (Pacific SA Standard Time, UTC-04:00)
Wednesday, June 17, 2009
One of those nice messages…
Although this message is 100% correct, it isn’t very appropriate when I press Ctrl-F5 (=Start without debugging) in Visual Studio. Since I want to start the app without debugging, but want to wait for a request, there’s nothing to start when this concerns a web application. Still, I wanted to start without debugging, so there should be nothing to debug in the fist place?
Ah well, Wednesday morning I guess…
Wednesday, June 17, 2009 8:49:00 AM (Pacific SA Standard Time, UTC-04:00)
Monday, June 15, 2009
Sewer troubles
Our sewer is at it again. One big mess, and the exit pipe completely broken. Before you say: “Yuck”, we noticed the problem before the toilets stopped working. (Luckily!)
A few months ago, we had a problem that our sewer was clogged up, and it was clogged up pretty badly. They used (like usual) high pressure to remove the obstruction, but since then, the ground on the outside of our sewer pit started to sink slowly…
We didn’t notice this until a few weeks ago, when the Esso came here to fill up our Diesel tank for the heater. (We heat our house and the water on Diesel.) Since the Diesel tanker uses a hose of more than 30 meters which goes all the way to the back of our house from the street, we need to walk over that same spot that the sewer pit is at… and guess what? That is when I noticed the ground started to cave in. I took a step and I was standing up to my knees in the ground. (They joked about that, because they said I was simply too heavy) but I thought to myself, this can’t be good.
Last Saturday I was taking my usual shower and I noticed that the toilet was making a funny bubbling sound. Now I knew that the air coming from the toilet was coming straight out of the sewer, making place for the water I was putting in. So I asked Tatiana (my wife) to check with the water company (Aguadecima) to let them do the usual unclogging.
Today we called them, and they came. My suspicion was right. The sewer pit was almost filled up to the top, the pipe to the street is broken and they will replace it this week. That’s going to be some digging, but at least we have some space in the pit that can be filled now, because they were able to once-again remove some obstruction that was causing this mess.
And the nicest part? All of this is done for free! They react quick, and don’t charge a dime. If the problem lies between the pit and the house, it’s our problem. From the pit to the street, including the pit itself, is the problem of the county. This is needless to say, they respond quickly. Once they start digging, I’ll shoot some pictures :)
Monday, June 15, 2009 5:26:50 PM (Pacific SA Standard Time, UTC-04:00) Chilean Adventures
Opera and the anti-trust case
First of all, this is my blog where I vent my own opinion. I’m not impartial, nor am I a judge, jury, or anything else on that kind. Having said that, if you don’t agree with me, that’s fine. If you do, that also fine. :)
The anti-trust case was started by Opera simply because they lack the market share and are now trying to get a competitive edge by letting their browser be included in the world’s most popular operating system. The question that this will raise: “Is this fair?”
Microsoft worked hard on Windows 7, Internet Explorer 8, and all other software that goes with it. (Media player, Media center, etc.) They invested millions into these products. Anyone who’s willing to buy this will have a secure, reliable, piece of software and once a bug is discovered which compromises security even the slightest, everything is done to plug the hole as soon as possible.
If I install any well-known Linux distribution on my PC, does it come with a browser? Sure it does. Does it come with Internet Explorer? Of course not. Embedding closed-source apps into a open-source OS would cause a small revolution here and there, but besides that, Microsoft does not allow it. Their licensing agreement does not allow you to simply install their browser on any other platform than the ones they say it may be installed on. Even several Windows versions do not meet this criteria. For example: Windows 200, Windows 9x/Me and Windows NT can only be used with IE6 and lower. IE7 and higher are not working on those operating systems.
So there’s no competition for Internet Explorer between Windows and Linux. Since there is an Opera version for Mac OS X, Linux, FreeBSD, Solaris, QNX, OS/2 and what-have-you even BeOS, they should have plenty of market share to go on, right?
But this still doesn’t answer the question: “Is this fair?”
Microsoft is willing to strip-out it’s browser of Windows for the European market, the so-called “E” edition. That means: deliver Windows without any browser. How you’re going to get a browser if you don’t have a browser? The consumers will be hard-hit with this, and OEMs will be eventually making the choice to install the browser for the customer, which is (you guessed it) probably Internet Explorer anyway. This will lead to higher costs and even frustration on the end-user’s behalf. Not a good thing. It’s even worst, because the “E” Edition will be the only edition that will be available in the European market.
Does this help Opera? Or will it help other browsers, like Chrome, FireFox, etc? Guess 3 times. The average home user doesn’t give a damn which browser they use, as long as it works. Businesses care about 3 things though: “Can it be managed?”, “Does it work with the solutions I use?” and “Is it safe?”
All browsers claim to be “the safest”, “the fastest”, and so on, and Opera is no exception in this case. Clearly this is where Apple has a lot to learn, since Safari seems to be the easiest browser to hack yet. But this is besides the point of this article. Fact of the matter is, most business applications were historically built for Internet Explorer. I can remember the phrase “IE Only” like it was told yesterday. These days web standards become better implemented and the differences between browsers gets less and less, but still, there are differences.
Most businesses will not change easily from IE6 to IE7, or from IE7 even to IE8. But they certainly won’t change that easy from IE to FireFox or … Opera? I can hear the manager saying: “But isn’t that that lady on TV?” Businesses will simply say: “I have better use for my time” and will not give it any more thought.
Home users? They will stay with what they find best working for their daily activities. If that means Internet Explorer, they might as well stick with it.
But this still doesn’t answer the question: “Is this fair?”
OK. Now back to the real heart of the issue. IS THIS FAIR? To force Microsoft to include Opera into Windows 7. No it is NOT. Several reasons:
Windows is Microsoft’s property, they decide what they want to do with it. If they want to include someone else’s products, fine, if not, then not. It should be their decision, not anyone else’s.
Including other company’s software in your own products can have huge implications. If a security leak is detected in Opera, who must fix it? Opera? Microsoft? You would say “Opera of course”, but wasn’t Microsoft who delivered that browser in the first place? This leads to confusion, problems and ultimately a bad reputation.
Internet Explorer is also Microsoft’s property. Why may they not include it in Windows for free? Ah, but the EU says, you’re charging for this in the Windows license fee. So even if they do, make it worst. Pay the same price and get less for your money. I can bet that Windows will not be any cheaper.
My conclusion is that Opera kind of ruined it for everyone in Europe. They started out to gain market share, and they probably made the end-user experience a lot more problematic and will probably not gain much in the end. That together with people now paying more for the same machine for the extra work that’s involved.
Way to go Opera!
Monday, June 15, 2009 2:51:27 PM (Pacific SA Standard Time, UTC-04:00) Opinions
Sunday, June 14, 2009
Oh dear…
Does that mean I need to Twitter more often? ;)
Sunday, June 14, 2009 6:52:33 PM (Pacific SA Standard Time, UTC-04:00)
Friday, June 12, 2009
Silverlight 3 in the making
I haven’t blinked… yet, and there’s a new Silverlight version. After listening to Hanselminutes I notice that Microsoft is trying to start with out-of-the browser cross-platform applications, which is Silverlight 3. The beta you can download here: http://silverlight.net/getstarted/silverlight3/default.aspx Silverlight 3 will be integrated into Blend 3, which is also a free beta download.
I guess this will be the answer to Adobe AIR (or Adobe Integrated Runtime). Air uses Flex and Flash, HTML, JScript and AJAX, Silverlight 3 uses a mini CLR, JScript and XAML.
I’m by no means a Silverlight expert, nor AIR for that matter, so I guess this means that I’ll have something more to study. First WPF though…
Friday, June 12, 2009 11:04:06 AM (Pacific SA Standard Time, UTC-04:00)
Thursday, June 11, 2009
Mail wasn’t working…
I had just solved a nasty error, which was a interesting chain of events. My mail wasn’t delivered to the Netherlands, and the mail wasn’t coming in. Upon checking what was going wrong, I got a DNS error.
Checking the DNS server, it said: “Can’t bind to IP address X on interface Y”. Taking out netstat to see who was listening on port 53 (the default DNS port), I found that this was only the DNS server… strange… restarted the server, same problem.
Time to check the IP configuration, guess what? The static IP address assigned to this machine was a duplicate. After some server hunting, I found the offender, which has a different IP address now. Restarted the DNS server for a second time, and the mail started coming in.
Thursday, June 11, 2009 10:22:44 AM (Pacific SA Standard Time, UTC-04:00)
Wednesday, June 10, 2009
Visual Studio 2010 Beta 1 – First thoughts
I’ve been using Visual Studio 2010 for a few days now and I must say, I’m impressed. The version I’ve been using is the Team Suite version, Beta 1. I really like the multi monitor support as well as the possibility to zoom in on text and the fact that Visual Studio is now built using WPF makes Visual Studio 2010 a complete new experience. It is notably slower than the 2008 version though, it doesn’t feel as snappy as what 2008 did. With 2010 you get a new .Net Framework, but I’m not going into new features of .Net 4.0 in this post. In stead I’ll concentrate on the IDE. Some random thoughts:
- The code editor has improved a lot, as has Intellisense. Documents can be dragged out of the main window and be put anywhere, even full-screen on a different monitor. You can zoom in- and out of text, park the cursor onto a variable/member and see where it is referenced, refactoring is improved and you can toggle Intellisense between standard mode and consume-first mode.
- ClickOnce has changed a bit, and a some UI options have been taken away, especially in the partial trust area. There are still ways around this though, but it means a bit more hand-work. For the rest, not much noticeable in this part, if I forgot something, please let me know.
- The icons used in the UI are still the same as the last version, I guess they had their hands full rewriting the IDE. (And there are a LOT of icons in Visual Studio!) This doesn’t bother me though, functionality I think is way more important.
- No project templates for Office 2003… Options have been taken out as well… I guess that was to be expected since Office 2003 is out of mainstream support, but I’m a bit sad about it since some of my projects still use Office 2003 integration. Maybe there’s a way around this, I have no clue.
- F# Made it into Visual Studio. IronPyton and IronRuby haven’t? Probably an add-on
- New UML Modelling project, no idea how to use it though :)
Except all of this, extensibility and the new Team Foundation Server is there. Team build uses Workflow Foundation, and gated check-ins, so on that part we’ll probably see more improvement as well.
All in all, a fine release.
Wednesday, June 10, 2009 5:40:03 PM (Pacific SA Standard Time, UTC-04:00)
Tuesday, June 09, 2009
.Net 4.0 – No longer the layer-cake model, no longer the CAS policy
.Net 4.0 comes with a set of changes, that makes development and management of software a lot easier. There have been changes in the security model of .Net 4.0, the CLR itself and the layer-cake model is more or less gone because this is a new side-by-side release. Let’s take things step by step and let me tell you the changes I have seen so far…
Changes in security
The CAS policy is … gone. Say what? Everything runs as full trust now? Er… no, but there are a lot of changes. To sum them up, this is what it’s going to be:
- By default, unhosted applications are not subject to managed security policy when you run under 4.0. Effectively, this means any managed application that you launch from the command prompt or by double clicking the .exe in Windows Explorer will run fully trusted, as will all of the assemblies that it loads (including assemblies that it loads from a location other than the the directory where the executable lives).
- Applications that host .Net applications (like Internet Explorer for example) still can sandbox code. Also AppDomains can be used to sandbox code in. The difference is: the host decides now which permissions the application gets, not the CAS policy.
- When using Assembly.LoadFrom in a manner that .Net 3.5 and before would cause to sandbox the assembly, but .Net 4.0 won’t, a FileLoadException is thrown. (Inner exception will read “NotSupportedException”)
All this makes management of applications a lot easier and .Net applications will work more predictable.
Source: Shawn Farkas
The layer-cake model is gone
The layer-cake model was that a new version of .Net was built “on top” of a previous version and this way adding functionality. This is not the case with .Net 4.0. .Net 4.0 can co-exist with .Net 2.0, 3.0 and 3.5 and applications that host .Net solutions can host both 2.0-3.5 and 4.0 side by side in the same process. This last part wasn’t possible with .Net 1.0, 1.1 or 2.0. .Net 3.0 was essentially built “on top” of 2.0, the CLR didn’t change in that time. .Net 3.5 was built on top of .Net 3.0, adding functionality but not changing the CLR significantly. (Both did service pack the lower releases though ;))
A new language – F#
F# is a language which already existed for a long time, but wasn’t delivered with Visual Studio. Now, F# will make it into the Visual Studio package, bringing the total of the Microsoft .Net Languages up to 7 (C#, VB.Net, J#, C++.Net, JScript.Net, IronPyton and IronRuby) (If I forgot one, please let me know.)
A new version of C#
C# get a bunch of new language features (also VB.Net will see these things, but I’m more a C# guy) which will include:
- The dynamic keyword (finally!)
- Optional parameters (again, finally!)
- The no-PIA feature
- Co- and contra variance (also great)
This makes C# again a lot easier to work with.
Client Profile versions of .Net
Not really new to .Net 4.0 (.Net 3.5 included this already) is a client profile version, which is essentially a stripped-down version of .Net for client applications. Things like Windows Services, code compiler routines, web services, remoting and so on are not included in the client profile, because they are typically not needed. Also .Net 4.0 will have a client profile version of .Net which allows to distribute .Net with a smaller footprint.
Server core version of .Net
When Windows Server 2008 R2 is release, a server core version of .Net will be available. This will be both for .Net 2.0 and higher. Probably .Net 4.0 will also be available for server core, although there’s no news on this yet. .Net on core does have it’s advantages, because you can use IIS7 with ASP.Net or run application services on server core.
Threading improvements
Now, when .Net software wants to use multiple cores, it can do this only by starting separate threads. Thread management is cumbersome to implement and simply costs development time. With .Net 4.0 the Task Parallel Library will be included which contains out-of-the-box functions to make for-loops parallel, using parallel linq, and so on. This means that CPU heavy programs and routines that use heavy CPU calculations can now be optimized for using multiple cores and executing tasks in parallel.
Concluding
Although at first sight, it might look as if the new features are a bit slim, certainly not the volume we had with the introduction of .Net 3.0 (which introduced WCF, WF and WPF all at once), but the new features do provide a lot of usefulness and will shorten development times for a number of projects. Soon, more about the new features of Visual Studio 2010.
Tuesday, June 09, 2009 1:57:02 AM (Pacific SA Standard Time, UTC-04:00)
Monday, June 08, 2009
Remoting or WCF?
.Net Remoting sounds old, and it is essentially old. Though this is a technique not commonly used and not so popular, it is still valid and it still works today. (Even in .Net 4.0) WCF has gained more popularity since .Net 3.0. Now WCF is popular and .Net Remoting is nearly forgotten. Still, I have to use .Net Remoting because some of my customers are still using – glump – Windows 2000. Guess what Windows 2000 supports? Only .Net 2.0.
.Net Remoting supports almost any host, including IIS. Just like WCF, you can create your own Windows Service to host your Remoting objects or host them in IIS. There are some considerations that you should take when using .Net Remoting, but once you’ve gotten used to it, you’ll see that it’s quite a easy way to establish inter-process communication.
So time for some examples… For this example we’ll use 3 assemblies. One class library and 2 console applications.
First, let’s create a remotable object in a class library:
using System;
using System.Collections.Generic;
using System.Text;
namespace MyRemoteObjects
{
public class RemotableObject : MarshalByRefObject
{
public RemotableObject()
{
startTime = DateTime.Now;
}
private DateTime startTime;
public DateTime GetDateTime()
{
Console.WriteLine("Someone wants to know the time");
return DateTime.Now;
}
~RemotableObject()
{
Console.WriteLine("I'm shut down after {0}", DateTime.Now - startTime);
}
}
}
Next, here’s the source code for the server application:
using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;
using System.Collections.Generic;
using System.Text;
using MyRemoteObjects;
namespace MyRemoteService
{
class Program
{
static void Main(string[] args)
{
HttpChannel channel = new HttpChannel(8080);
ChannelServices.RegisterChannel(channel, false);
RemotableObject object1 = new RemotableObject();
Console.WriteLine("I'm the server");
ObjRef ref1 = RemotingServices.Marshal(object1, "object1uri");
Console.WriteLine("ObjRef.URI: {0}", ref1.URI);
Console.WriteLine("Press enter to quit the app");
Console.ReadLine();
// tear down
RemotingServices.Disconnect(object1);
ChannelServices.UnregisterChannel(channel);
// The ServiceClass object's Finalize method writes a message to
// the console. A single object will almost always succeed in
// running its Finalize method before the Console is finalized;
// in a larger application, you could ensure that all objects
// finalize before the application ends by calling the garbage
// collector and waiting.
GC.Collect();
GC.WaitForPendingFinalizers();
}
}
}
Last, here’s the source for the client application:
using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;
using System.Collections.Generic;
using System.Text;
using MyRemoteObjects;
namespace RemotingExample
{
class Program
{
static void Main(string[] args)
{
HttpChannel channel = new HttpChannel(0);
ChannelServices.RegisterChannel(channel, false);
RemotingConfiguration.RegisterWellKnownClientType(typeof(RemotableObject), "http://localhost:8080/object1uri");
RemotableObject remObject = new RemotableObject();
Console.WriteLine("I'm the client");
try
{
Console.WriteLine("The time on the server is: {0}", remObject.GetDateTime());
}
catch (Exception ex)
{
Console.WriteLine("Oops: {0}", ex);
}
Console.ReadLine();
}
}
}
After building and running this, you’ll get something like this:
If you would put this into a service, you can actually talk with your Windows service without much of a hassle. Hope this helps! Objects that are passed from the server to the client need to be either serializable or inherited from MarshalByRefObject.
Monday, June 08, 2009 1:16:06 PM (Pacific SA Standard Time, UTC-04:00)
Working on a new theme for this blog
I’m not happy with the current blue theme… The navigation is overlapped by code segments,
the text gets too wide on big wide-screen monitors
and last but not least, the text is simply too tiny. (Even on a 87 DPI screen it’s hard to read.) So I’ll be changing the theme any day now, to something somewhat more appealing and more usable. If you’ve got some suggestions, feel free to share them! You can comment on this post, or mail me.
Monday, June 08, 2009 11:48:03 AM (Pacific SA Standard Time, UTC-04:00)
Which search engine is best for you?
Take a look at http://blindsearch.fejus.com/. Here you can test your favorite searches and see which engine is best for you. Just search about 10 times and see which engine had the best results 
Monday, June 08, 2009 11:42:14 AM (Pacific SA Standard Time, UTC-04:00)