Oh, how I wish I had this when I was a Teacher

Writer Unboxed posted an excellent check list for Judging Your Internet Catch.

My personal favorite tidbit was about sites like Snopes:

Beware false authority. No site, no matter how wonderful, is guaranteed to be perfect; people run them, after all! Snopes.com, a terrific website dedicated to debunking the urban legends that propagate on the ‘net, is often considered by many to be a “primary source” of information—a trustworthy, take-it-to-the-bank kind of source. But some time ago they posted false information about the origin of the nursery rhyme, “Sing a Song of Sixpence,” stating it was a coded message used to recruit new pirates while on land. The thing is, Snopes knew the information was false when it posted it on its site, and it did it to prove a point: No site is inherently trustworthy.

If you didn't do thorough research and click on the "More Information" link, you got suckered.