Andem - 10:20 pm on Dec 5, 2011 (gmt 0)
Ah yes, the site which posts 'reviews' which are normally rewritten product descriptions of what the original developer promotes their product as. Other sites have been using them for a while now before Google actually posted specifications.
I would suggest using the guidelines Google has posted which rustybrick has referenced. If you don't have that kind of content, I would suggestion against it.