Although HTML5 may not reach a official W3C recommendation until 2012, there are still plenty of opportunities for designers and developers to put it into practice.
Web design/development site MIX Online and the web designer conference An Event Apart have joined forces to create 10k Apart, an app building contest that encourages the creation of inspiring web apps with HTML5 that are no larger than 10 kilobytes. Prizes include free registration to the An Event Apart conference of your choice, HTML5 design books, and Visa Cash Cards.
The contest ends August 25th, at 5 pm. Click here for more information, and a gallery of the apps submitted thus far.