I was just surfing across the web to test my html5 application.I found a beautiful site that i would like to share. I spend some good time on it  figured it out quite interesting.

People who are developing mobile web|Html5 based applications ,  Wandering whether their solution adopts 100% to the browsers available in the market and which browser supports what sort of features  ,tags etc..  Then the below specified site gives you perfect solution for all your queries.

They had specified even browser, browser comparison and points specified to the compatibility of HTML5 Support

So check it out you might find interesting too.