In general, I view Reddit as a complete cesspool; I'm not really sure what any sub there really needs to exist. Most OSS projects get along just fine without it (in fact, I've never heard of one that used it).

I mean, it sucks that abusive users are out there, but it is Reddit after all. For communications with users, I think the old-style method of having Bugzilla and requiring an account to file bugs is probably the best.