The OAuth community is dedicated to improving the spec and library codebase, spreading awareness of the protocol and documenting and showing, through screencasts, wireframes, mockups and other illustrative designs, how to best put OAuth to use.
The IETF OAuth mailing list is for work related to IETF standardization.
You can search StackOverflow for questions relating to provider-specific implementations of OAuth.
The source code to this site is available on Github. Feel free to submit pull requests with changes!