Sure, but I think what ckozlowski was saying is that even though these particular users may have no value in themselves and their (lack of) discourse, they brin

Sure, but I think what ckozlowski was saying is that even though these particular users may have no value in themselves and their (lack of) discourse, they bring attention of other well-mannered users that then get into intelligent discourse. Trolls are a bit like political extremists: if they weren't here, you wouldn't talk about the ugly stuff so much and make sure it's kept in check.