Ok, this sounds nice, but it means we have to give up the current trac setup as well as svn. I guess we get no "merge button" if we use the github-trac integration, and that it is not possible to integrate a buildbot or coding style checker in between. These are things we are planning for our Trac, and would also be of great help. That's why keeping an hand on the servers we use may be nice.You usually shouldn't be concerning yourself about what's happening on these forks, as a lot of them will be uninteresting. The people who have changes that are intended for you will be those that add a pull request, which creates an issue on the master repository, which you can merge using the merge button[0].
-- Adrien.