Short description of error
Links for addons are outdated, they still point to projects.blender.org and svn.blender.org
Exact steps for others to reproduce the error
The tracker_url defined within every addon's bl_info still points to projects.blender.org.
It also appears that a good portion of the wiki_url pages for addons still have svn.blender.org links listed for download current version. (is that only contrib?)
developer.blender.org and git.blender.org have been running for over 2 months now, I think we should look at updating the addon links ready for the 2.70 release.