We have set up a number of sites to support OAuth and the community. They are: 

• Website: http://oauth.net
• Blog: http://blog.oauth.net
• Wiki: http://wiki.oauth.net
• Code: http://code.google.com/p/oauth
• SVN Repo: http://oauth.googlecode.com/svn/
• Flickr Group: http://flickr.com/groups/oauth
• Slideshare Group: http://www.slideshare.net/group/oauth
• Mailing lists
• Forums: http://getsatisfaction.com/oauth 

Some explanations: 

• Website: mother brain. This is where a lot of the disaggregated stuff is aggregated. The hub of the wheel with many spokes, if you will.
• Blog: big announcements, etc., probably reposting of other interesting blog posts
• Tumblr: listing and gathering OAuth supporters/implementers in reverse chronological order
• Code: SVN repository
• Wiki: supporting documentation, use cases, interaction design recommendations
• Flickr group: interaction design mockups, use cases, logos, examples in the wild
• Slideshare: OAuth presentations/slides
• Ma.gnolia: links related to OAuth generally (delicious.com is fine for this as well, using the "oauth" tag) Pibb/IRC: public synchronous discussions
• Mailing list: should be obvious
• Forums: implementors support, ideas, etc