Adam Baso, 31/05/2013 20:39:
http://googlewebmastercentral.blogspot.com/2013/05/getting-started-with-stru...
I've tried the helper but I didn't find many tags of use (they already know that stuff about Wikipedia). However, some of those schema.org tags (like "Article") could be added to MediaWiki maybe? We've seen some requests: https://bugzilla.wikimedia.org/29968 https://bugzilla.wikimedia.org/28776 Also: https://www.mediawiki.org/wiki/Thread:Extension_talk:PageImages/Open_Graph_image?
Nemo