Something Awful, D&D forum. Maybe not insightful but at least civil. $10 accounts mean being a shithead has consequences.
I got an account probation, after posting something a few years back about how a specific poster was being disingenuous (and this on the GBS board, which is pretty toxic anyways), and wound up unable to post for 8 hours. Haven't been back since.
That and I find "goon" humor really smarmy and tiresome :/