What about move safeframes to Github?
Well, it is open source, if we get enough support for this we would consider it. We have to weigh the effort and cost against the potential value.
Well, (in my opinion), today, Github is the platform for open-source projects.
Safeframes will receive much more feedback and help from developers, if hosted on Github.
I don't know very much about Source Forge, but Github provides lots of features that helps open-source projects(pullrequests, issue-tracker, notifications, and many others).
+1 for moving to Github. SourceForge is ok, but it's much easier to participate on Github and everybody's there already.
Personally I prefer sourceforge over github for a bunch of reasons.
But I can also tell you that at my company, we purposefully do not use Git for source control as we have found that it simply does not scale very well with a lot of projects / users.
Since it's mainly a matter of opinion beyond that, I'm not inclined to have it move.