After feminist Caroline Criado-Perez campaigned to get more women?s faces?onto British currency (and succeeded, with Jane Austen now appearing on the 10-pound note!) she was immediately?denigrated and threatened?online by Twitter trolls. After receiving an estimated 50 abusive tweets per hour for 12 hours, Criado-Perez reported the online threats to the police, leading to the arrest of a 21-year-old. The incident has sparked a popular petition in Britain for a ?report abuse? button to be featured on Twitter, so that the popular social media site could police abusers itself, without relying on victims to file reports with authorities.?[Source]

