How to Leave Twitter

Three years ago columnist and author Grace Dent joined new social network site Twitter, mainly as a place to dump her surplus jokes, rant about garbage TV and post exclusive j-pegs of her hot new toenail-varnish. But as every 're-tweet' and 'Follow Friday' saw her audience figures soar by tens of thousands, Dent found herself centre-stage in an all-consuming highly addictive so...