Hoax Slayer: This useful
website keeps track of the thousands of hoaxes circulating around the
internet at any particular moment. It includes a separate section on those that appear on Facebook. Before falling for a hoax, or passing one on, check this site first.
Urban Myths: There are loads of urban myths out there (e.g. a cursed mummy on the Titanic). To check out whether the story you've been told is true, visit the Snopes website (www.snopes.com); it's a marvellous source for quickly sorting out these stories.
Phil Bradley in CILIP Update (various dates)