Yes, at a minimum it needs to contribute to the discussion. If it doesn't do that, it should get voted down. There are other factors at play that will make pe

Yes, at a minimum it needs to contribute to the discussion. If it doesn't do that, it should get voted down. There are other factors at play that will make people vote something down also; there was a topic/entry here with some interesting suggestions about multi-dimensional ratings (that I can't seem to find the page for it now).