I got a message that said:
This AIM user has sent you a Greetings Card, to open it visit:
http://greetings.aol.com/index.pd?so...stmas_card.COM
This senders personal note: Merry Christmas!
In the real message the hyperlink actually takes you to a different site that downloads the worm on your computer, i edited it from this post
THIS IS A WORM!
http://isc.sans.org/diary.php?storyid=917
I thought it looked suspicious, so I looked it up.
So beware!