---- Trick to Google Ranks - Using Semantic Best Practices
JD_Toims - 12:05 am on Dec 19, 2013 (gmt 0)
The ones they like For Rich Snippets.
Added: From the same source I cited above.
Having a single vocabulary and markup syntax that is supported by the major search engines means that webmasters donít have to make tradeoffs based on which markup type is supported by which search engine. schema.org supports a wide collection of item types, although not all of these are yet used to create rich snippets.