Twitter Inc. on Tuesday revised its strategy for fighting abusive internet "trolls," saying it would use behavioral signals to identify harassers on the social network and then limit the visibility of their tweets.
San Francisco-based Twitter, known for freewheeling discussions since it was founded in 2006, has been trying to rid itself of harassment out of concern that personal attacks were driving people away.
Twitter's rules already prohibit abuse, and it can suspend or block offenders once someone reports them. Users can also mute people they find offensive.