Now that Twitter has rolled out their Lists feature to everybody, one question remains: when will we see the dark side of Twitter lists?

So far most lists have been positive, based on topics covered, status, groups, etc. However, it is only a matter of time before negative lists begin popping up.

By negative lists I mean things like “overrated,” “douchebags,” “corrupt,” “evil,” or even more sinister lists like “babykillers,” anti-homosexual, etc.

These negative lists could be especially harmful because the link to the lists a user is on is right on their profile.

Once this happens Twitter will have to make a decision about whether or not a user can remove themselves from a list, and/or whether lists can be flagged for abuse.

What are your thoughts on the potential for negative Twitter lists? Do you think a user should be able to remove themselves from lists? What steps should Twitter take?

UPDATE: I ran a quick test and I can confirm that by blocking a Twitter user you remove yourself from any of their lists and prevent them from listing you again. While this solves the isolated incident, I still wonder about the possibility of a large group of people engaging in a sort of negative list flash mob on an account, something like the Twitter version of a negative Google bomb, which would require that person to manually block all those people to finally remove themselves from all the lists.