The latest scam to watch for is a fake email supposedly from Facebook. The email says that someone left an offensive comment on your Facebook wall and tells you to click a button to see the comment.
Of course, if you click the button you're taken to a malicious site that looks like a Facebook profile page. The page installs the Blackhole exploit on your system, which allows hackers to remotely install other malware, including viruses that can steal your personal !
Too many people click on links in email without thinking about how unsafe it is. Don't be one of those people!