Keep your user name and passwords to yourself. Using a computer in a school or library? Be careful! Who's looking over your shoulder?

When using a public or school computer, check to see that no one is spying on you when you type your passwords into a web site. Be sure to log out when you're done.
Don't let anyone else borrow your passwords, either, or they may log into your account and pose as you! They might send not-so-nice messages in your name. If it's a game site, they might be able to steal all your gold!