Consider adding a +1 button for project pages. Sure, FaceBook has it (you can +1 JBoss on FaceBook), but what does that mean? That's akin to liking JBoss on SourceForge. Doesn't mean much. But a +1 button on the project pages would be a way to like a specific project, and perhaps give us an idea of where interest lies in a project (whether early on or for older projects).

(We may be able to delegate the +1 feature to ohloh's "I use this" button and then just include it the button and count on the project site).

Voting up a project should not require a FaceBook login.

https://www.ohloh.net/p (see "I use this" button)
http://www.google.com/+1/button/