"A man in the UK has been jailed for 18 weeks for 'trolling,' and has also been given an order banning him from using social networking sites for five years.
http://www.parevolution.com/newswire/122118-uk-man-jailed-for-being-a-jerk-on-the-internet
http://www.parevolution.com/newswire/122118-uk-man-jailed-for-being-a-jerk-on-the-internet