The Open Graph protocol
Various authors,
OGP.me,
Jun 14, 2012
Dave Winer wrote he thought Twitter was playing favorites with special clients. Turns out it is. But he also thought Twitter might be using the open graph protocol, as Bill Seitz suggested. I don't know about that yet. But open graph tags are well worth exploring, just in case they become widely used. I've covered this before. Facebook introduced the open graph last fall. This page describes the protocol in detail, describing a large number of OGP tags.
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