facebook-opengraph has 365 questions.
opengraph has 514 questions.
closed as off-topic by Martijn Pieters, mmyers, rene, ProgramFOX, random Aug 28 '14 at 17:28
This question appears to be off-topic. The users who voted to close gave this specific reason:
opengraph refers to the protocol originally created for Facebook (though most users have been tagging them with both)
For example, Google Plus accepts this protocol.
facebook-opengraph refers to the Open Graph specifically in relation with Facebook Graph API.
I suppose one should change the descriptions of these tags as to prevent further confusion.