Google has created an (only subtly branded, mostly trying to be neutral looking) HTML5 showcase, presentation and tutorial called HTML 5 Rocks (on a side-note, this site is inaccessible from China). What exactly HTML5 will be though in popular usage may be decided in new browser and standard battles. Take Apple's HTML5 showcase , for instance: once you click on the demos using Firefox, a message pops up saying "You'll need to download Safari to view this demo.