Internet picks of the week

Wikiseedier Alongside Google and Facebook, Wikipedia has become one of the secret rulers of the internet universe – and damn handy for pub quizzes. Yet despite how much we trust it for information, it is because of its open source nature that it is also home to pranks, lies and false facts. Most of these acts of random info vandalism get immediately erased by the site's watchdogs, but here they are cherished for posterity. Most of the finest examples concern celebrities: fibs that a disease has been named after Ben Fogle, that Andi Peters died in a freak paintballing accident and that Sean Bean (real name Sean Pig) employs a Swedish ex-nanny to tweak his nipples. Elsewhere we learn that "halibut is the only fish that masturbates" and the second world war began when Hitler ate the last slice of cheesecake. Recycled Movie Costumes With limited budgets, most films and TV dramas rely on costume houses for their wardrobes. It means getting the right period look, but also that a dress worn by the leading lady in one film turns up in other productions. Here these recycled costumes – from medieval ruffles to Mad Men-era cocktail dresses – are spotted and noted. The same clothes were worn by Richard Burton in Cleopatra and Sid James in Carry On Cleo, while every depiction of Elizabeth I features an identical gown. Most recently Downton Abbey has been riffling through the wardrobes of Helen Bonham Carter and Keira Knightley. Blog roll: The X Factor Reality Bites Wagner Watch, the campaign for a Smiths Week, and all the contestants' Twitter feeds. Aiden Grimshaw The most "intense" man ever to come from Lancashire in all his "intense" glory. He's a bit "intense", you know. Unreality Tales from the tabloids, Tesco Mary news, and a forum for failed auditionees still waiting for their call back. The F Factor Matt Edmondson's official – but still funny – online-only weekly fan show. Peter Dickson The frightening official site of The X Factor's voiceover shouty man. Papture Where the people's paparazzi post their cameraphone snaps of One Direction nipping out to the Spar shop. What we learned on the web this week The most popular mobile phone in the world How to spoil 100 horror movies in five minutes How to explain the internet to a 19th-century street urchin The biology of zombies How much does Lisbeth Salander really know about hacking The secret algorithm of the Facebook news feed Procrastination is fuelled by weakness in the face of impulse and a failure to think about thinking Astronauts' fingernails fall off The 18 songs in The Social Network soundtrack that aren't on The Social Network soundtrack