There is a computer virus spreading like wildfire on Facebook and MySpace. It is a Trojan worm called Koobface (anagram of Facebook). It steals your info, invades your system and shuts it down!
Do not click a link to “Barack Obama Clinkton Scandal“.
Also do not accept to be friends with “SmartGirl15“. If somebody on your friends list adds her, you get the virus too.
One method the virus uses is to send e-mails and posts that appear ot be messages sent by friends or contacts from social media like Facebook and MySpace. The message typically includes invitations to video clips in YouTube.(snopes)
Another method Koobface spreads by delivering Facebook messages to people who are ‘friends’ of a Facebook user whose computer has already been infected. Upon receipt, the message directs the recipients to a third-party website, where they are prompted to download what is purported to be an update of the Adobe Flashplayer. If they download and execute the file, Koobface is able to infect their system. (wikipedia)
http://www.keeptalkinggreece.com/2010/12/29/beware-of-the-new-virus-on-facebook-myspace/