Remember, the Internet is worse than your local newspaper - you just can't believe everything you read. For some people, reading information in print gives it legitimacy.
No, no, no - after all, anyone can post information on the Internet, and before long, hundreds of people have seen it and have passed it on with the belief that it MUST be true because they read all about it on the World Wide Web.
If you have ever wondered how to check something out before you pass it on, one of the most useful sites you can try is Snopes.com, which allows you to check out the latest Urban Legends. There are more than 40 categories of Fact vs. Fiction, and there's even listings for "What's New" and "Hottest 25 Legends".
Here's where you can find out if Herman, the German Giant rabbit, really is 3 feet tall on his hind legs, and weighs 17 pounds. (Yes, this one is true). Or, how about the email shipped across the US about the Formosan subterranean termites supposedly showing up in mulch being sold by home improvement stores - click on Formosan Termites .
In any case, you might want to bookmark the Snopes.com site for future reference - that way you can check out some of these stories before you pass them on.