Some folks have been asking, "what's all this stuff about legs in OAuth?" and "I don't understand the difference between 1, 2, and 3 legged OAuth?"
I have put together a flow-chart to try and show, from a client app perspective, what constitutes a 1, 2, or 3 legged authorization (click on image to enlarge).draft 13 specification.
[Update: Corrected diagram decision box,authorization box]
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