I like opposites, so I thought of this. Simple, rate the above users infamy. 0/10 is borderline mod. 10/10 is super spamzorz troller. The lower the number, the better.
Person 1: (No post)
Person 2: 6/10. Occasional spam, although you flame noticeably.
Person 3: 2/10. Very helpful, although the occasional flame.
Person 4: 4/10. Spammer. You spam quite a lot. Although you are helpful from time to time.
7/10 It's funny how this is a thread to rate how much people spam and flame, and so many posts are spam, and there is a little flaming, though nothing serious. I just saw the irony, and wanted to point it out.