The suckless mailinglist is a mailing list that seems to accept, if not encourage, the second type of trolling. It would be interesting to build some statistics from it's archives to see when and who abandoned the list. I think you are right, Zed, in that getting rid of the first type get's rid of the second type and empowers the third type. I also agree that the second type is very good for the community. Just look at the development that goes on in the suckless community, some really great stuff.