We're moving our plugins, gems, and other open source projects to github. I know, it's a shock. We're going to keep the SVN versions of them going for a while, but the official repositories for each of these is now what's hosted on github. So get busy with the hot forking action.
By-and-large, we've resisted the move to git, despite the searing heat it's been putting off in the Ruby community recently. We're still a centralized development house, and so our internal development will still be SVN-based. It's just how we roll. Though I imagine a few of the guys here will start picking up git-svn.