DOTNET

http://www.u229.no/stuff/Captcha/

http://sqlserver2000.databases.aspfaq.com/how-do-i-audit-changes-to-sql-server-data.html

http://www.tutorialcode.com/?id=index

http://blog.nerdbank.net/2007/01/aspnet-drop-in-control-to-enable-openid.html

http://russelleast.wordpress.com/2009/04/04/aspnet-mvc-defining-an-application-architecture/

http://lakkakula.wordpress.com/

http://dotnetslackers.com/articles/aspnet/ASP-NET-MVC-2-0-User-Interfaces.aspx