[mpa000]

I've found that people tend to use public lists as a way to insult people that they don't like. "List of nutjobs", "List of {blankety blanks}", etc.

[Karunamon]

I've both made (a long while ago!) and been on those lists. Damned if I can find it now, but I would have sworn that at some point, Twitter started dropping the hammer on people that misuse list notifications like that.