PUBLIC MARKS with tags standard & facebook

The Open Graph protocol enables any web page to become a rich object in a social graph. For instance, this is used on Facebook to allow any web page to have the same functionality as any other object on Facebook.

"As it happens, we already have a platform on which anyone can communicate and collaborate with anyone else, individuals and companies can develop applications which can interoperate with one another through open and freely available tools, protocols, and interfaces. It's called the internet and it's more compelling than AOL was in 1994 and Facebook in 2007."