Snopes.com is “probably the most popular and trusted online watchdog.” Just caught wind of a new PC worm? Shocked by a rumor about your senator? This myth-busting site, named after a nefarious fictional family, helps you decipher “what’s real and what’s rumor.” Entries are “well researched,” with original sources provided whenever possible.
Urbanlegends.about.com is “one of the longest-running myth-busting sites.” It debunks all kinds of urban legends. For each scam, the site “gives you a ‘status’ (false or dubious, for example) and provides analysis.” You can also stay up to date by browsing the top 25 hoaxes and latest additions.
Hoax-slayer.com is a “relative newcomer,” but it “covers most of the bases.” The site usefully organizes scams into such categories as “bogus warnings” and “funny e-mail hoaxes.”