Data Services
http://www.codeproject.com/KB/silverlight/DataAndRIA.aspx#RIA
Html5
WebSockets
Excellent talk from build 2011 on WebSockets and better still SignalR, which allows you to use web sockets OR long polling
http://channel9.msdn.com/Events/BUILD/BUILD2011/SAC-807T?format=progressive
SQL
Interesting article on how to break down some complex queries, the shortest SQL is not necessarily the most performant ;-)
http://sqlcat.com/sqlcat/b/technicalnotes/archive/2011/10/21/when-to-break-down-complex-queries.aspx
Restoring Database from device containing multiple backups
http://www.sqlservercentral.com/scripts/Restore+database/86957/
Async CQRS DDD Dexter DynamicLinq General HTMLHelpers Linq MSDTC MVC Optimizing T4MVC Tasks Testing Threads Umbraco White