Another MP gets muddled up on Twitter

Deputy Labour leader and shadow culture secretary Harriet Harman has become the latest MP to to get confused on Twitter, when she attempted to "@" Guardian columnist Polly Toynbee using her email address rather than her @pollytoynbee handle, and attaching a picture of Toynbee's article at a 90 degree angle rather than a link.

When a fellow Twitter user questioned her on this, she replied: "different ways to share a story...I like to see the newsprint!"

This comes just days after political blogger Guido Fawkes threatened legal action against Claire Perry MP, who alleged on the social media site that he was "distributing porn" on her site and had "sponsored" its hacking. "Confused by technology again @claire4devizes?", Guido asked.

Whether they are proficient or not, Twitter is becoming an increasingly popular tool for world leaders. A study out earlier this week found nearly 80 per cent of governments of the 193 UN member countries have a Twitter presence, and nearly a third of world leaders tweet themselves.