I just saw Can we please add http://sqa.stackexchange.com as a migration target? and in reading Tim Post's answer, I understand why SQA, or DBA would both make for poor migration paths away from programmers.
However, his thoughts only made my belief that Project Management should be a migration path from Programmers. We get quite a few PM based questions here, and while in the case of SQA or DBA there's good arguments that we have the expertise to give quality answers from a valuable perspective (that of a programmer). Questions that might be migrated in those directions could plausibly be riff-raff programmers just didn't want, which would be bad for those sites. On both of these points though Project Management is completely different.
Often times PM type questions don't get much input as many of us may know the topic, but not at the detailed level to cite evidence in any fashion other than personal experience, which isn't the best way to answer a question. Also I can't imagine programmers trying to only migrate the low quality PM questions, as even good PM questions we're unlikely to have particularly good answers for. I do get that we give the programmers perspective on these questions, but more often than not the PM questions I've seen here aren't looking for that necessarily.