...also, google's not going to take this lying down ;)<p>Why I say that... Open Graph is part of Facebook's strategy to use its 400M-user social network as leverage to take over indexing and navigation of the web, and serve ads with it.<p>Navigation of the web has been almost entirely Google's territory, because of Search (which also equals 90% of their revenue, from AdWords ads).<p>Therefore, Google has to counter Open Graph somehow...