"Discussion boards" that refuse to allow actual discussion.
There's a certain forum I visit that, from time to time, has a member -- usually a new person -- bring up something mildly controversial about the subject being "discussed." The topic is generally really interesting and could foster a deeper understanding, but oh no, the board moderators always get offended and shut it down saying the poster is being disrespectful.
Makes me crazy. But whatcha gonna do? You play in someone's sandbox, gotta play by their rules.
