As stated in this article, the majority of Twitter's users are outside the U.S.
The good will suffer because of the evil....
One can block people for abuse, which is important in controlling discussion, and one can report abuse and child porn, for example, which is a great good. However, political enemies can report someone with whom they disagree as spam and the person would be suspended from twittering for other reasons, like tweeting too much, or using words deemed offensive. One's employer can stop one from twittering as well. One can get banned from twitter. This problem could spill over into religious discussions, say in Egypt, if Copts were twittering. Where does this end?
Of course, criminal abuse must be stopped. The recent problems in Britain created and still create fear in the women who experienced bomb and rape threats for supporting a woman on a ten-pound note, replacing Darwin, thank God. Sadly, these horrible threats must end. Again, the problem is one of barbarity and living in an age of violence and immorality, hatreds and prejudices. http://www.ndtv.com/article/world/bid-to-honour-jane-austen-sets-off-rash-of-misogynist-abuse-online-401454
Obviously, I am against trolls, who are sick people like on line stalkers, there with malice to disrupt.
Read this as well...