Finders keepers, and anyone who finds your email address on the Web can use it to send you mail you don't want or to find out where you live. If you get a message from someone you don't know, tell your parents right away.

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Jif® Peanut Butter is proud to sponsor Cyberchase on PBS. At Jif®, we know just how choosy you are when it comes to your family - including the shows you value most. Public television encourages kids' curiosity and love of learning. And Jif® is proud to support Cyberchase on behalf of all choosy moms and dads.