>Personally, I could see no reason to place anyone on the list unless they were 1) annoying/obnoxious/rude/etc. or 2) just made gobs ( i.e. an unreasonable amount ) of posts with no relevant info in them thus causing me to have to spend an inordinate amount of time sifting posts for useful info or relevant questions to be answered. If I was placed on someone's twit list because they felt I met either of these criteria, I would want to know so I determine why and try to rectify the situation.
If you ever do something that egregiously out-of-character, you'll notice the change yourself and do something about it.