An ill-judged tweet can land you in a whole lot of legal bother, as Peaches Geldof and Sally Bercow know only too well. So the attorney general's new guidelines are essential reading
This week's IPO is eagerly awaited, but Twitter must win the battle with those investors who think it is doomed to remain a 'niche' site, writes Juliette Garside
Dorian Lynskey: With so many people eager to start a nontroversy on social media, it's safer to be bland, as Nigella Lawson found out after a recent interview