Does the Google/Bing/Yahoo Schema.org Markup Promote Invalid HTML?
[Update on 10-Jun-2011: The answer to the question of the title is “not really” – see the update at the bottom of this post and the comments for more informa...
[Update on 10-Jun-2011: The answer to the question of the title is “not really” – see the update at the bottom of this post and the comments for more informa...