It has been reported that the Director of Public Prosecutions is to "issue new social media rules" regarding what constitutes abuse, following a number of high-profile cases of nasty and offensive postings on Twitter and Facebook.
It is apparently known as "trolling", after the scary monsters. According to the Beeb: "Until recent years, the term 'trolls' referred to supernatural beings in Norse mythology." Has nobody there ever read The Lord of the Rings? A picture of one (from Troll-haugen, perhaps? Boom, boom!) was carried back in June, next to a report on proposed changes to the law.
Actually, I loved the depiction of trolls in the irreverent spoof by the Harvard Lampoon, called Bored of the Rings. In that, somewhat shorter, tome they are more like low-life gangsters and strip-club air-heads than the powerful, if sinister, stone monsters of Prof Tolkien's creation – which actually sounds more like the sad individuals who hide behind supposed anonymity to insult people in ways that would probably provoke a brawl if they were uttered aloud in a pub.