Remember folks, be careful what you click:

Worms on IM networks can spread rapidly. They appear as a message from a buddy with a link that looks innocent, but in fact points to malicious code somewhere on the Internet. Once the user clicks on the link, malicious code is installed and runs on the computer. The worm then spreads itself by sending messages to all names on the victim's contact list.

The advice to users is to be careful when clicking on links in IM messages--even when they seem to come from friends--and to use up-to-date antivirus software. When receiving a link in an instant message, the best practice is to verify with the sender if the link was sent intentionally or not.

It took Ellen about three years before she was finally tricked into unzipping a virus on her old computer, but this'll be a lot harder to spot. I guess it's time to finally install some anti-V on the stuff at home.