HTML5 is largely mature enough to start using now with ASP.NET websites. To start with, get the Web Standards update for Visual Studio 2010 SP1: http://visualstudiogallery.msdn.microsoft.com/a15c3ce9-f58f-42b7-8668-53f6cdc2cd83 The following are a list of things that I do to be compatible with HTML5. Use the html5 doctype at the top of every page: Set the lang in… Continue reading HTML5