Question: why would I want a list of which tweets directed at me are spam? The problem I want solved is that I ever see them at all, I don't really care if Jimbo scored a 78%-probability-of-spam for linking DJ Kittens on youtube.
It was a spam filter for your follower list. Some people just don't like having 300 spammers show up when someone clicks "followers" on their profile. Regardless, I wrote this comment to make the point about Twitter already having some automated spam systems, not to entice you to sign up for anything.
