Don't use Internet Explorer
This is the best reason I have seen in a long time to stop using Internet explorer:
IE Clipboard Plunder | ScriptingMagic.com
Basically websites can lift the contents of your windows clipboard without asking. So lets say you copy something out of quicken, or you online banking website, then you visit some sports site you like. If the webmaster is evil, he can collect that data that you just control-C Control-v ed someplace else and use it for whatever he wants.
In I.E. 7 it prompts you before divulging the data, but it prompts you for a lot of other things as well, and sometimes it is easy to click through without paying enough attention.
Firefox and Opera are sane enough not to include this "feature" Download firefox. You won't be sorry.
