One of the major reasons why VS is our favorite IDE is because of the intellisense support that it offers. It is very frustrating to work with VS 2010 without intellisense support. And these days, most of us are into the html5 stuff. MSDN documentation provides all sorts of pointers to html5 support with visual studio express 2011, however, could not find much for VS2010 support for html 5. Then I came across the below... so for you guys, who are still with Visual Studio 2010, please make sure you get the below installed ASAP.
http://visualstudiogallery.msdn.microsoft.com/a15c3ce9-f58f-42b7-8668-53f6cdc2cd83
Best,
Sudhin