5INO
Paul Irish: Because HTML5 and its related technologies cover so much ground, it can be a real a challenge to get up to speed on them. That’s why today we’re sharing HTML5 Rocks, a great new resource for developers and teams looking to put HTML5 to use today, including more information on specific features and when to use them in your apps.
I encourage advocacy sites to validate their content, and either conform or submit bug reports on intentional differences.
Note: Google is not unique here, see also Apple, and Microsoft.