I think temp. bans would be a good thing, as long as someone who gets too many gets perm. banned eventually. If they just keep coming back, it might be kind of obnoxious. Although I don't think it would really make a difference to me either way, and I would be fine with or without them.
The most we'd do for a user would be one-- giving someone more than one chance in this case is just ridiculous.
I highly doubt we'd ever do them anyway, though, so don't get your hopes up.
I highly doubt we'd ever do them anyway, though, so don't get your hopes up.