(UPDATED) Also known as: "Girl kills herself over Facebook post."
When last I checked, variants of the following message were replicating on Facebook at the rate of about once every 10 seconds:
WARNING: THERE IS A VIRUS GOING AROUND AGAIN, IF YOU SEE A GIRL WHO KILLED HERSELF OVER SOMETHING HER FATHER WROTE ON HER WALL DO NOT OPEN IT, IT IS A VIRUS AND IT WILL NOT ALLOW YOU TO DELETE IT, PLEASE PASS THIS ON BEFORE SOMEONE OPENS IT. (IT IS A SELF REPLICATING TROJAN)
Here's another version:
WARNING!!!!! IF YOU SEE A STATUS APPEAR ON YOUR WALL ABOUT A STORY OF A GIRL WHO KILLED HERSELF BECAUSE OF SOMETHING HER FATHER WROTE ON HER FACEBOOK WALL!!! DO NOT OPEN IT !!!! IT IS A VIRUS AND WILL RELEASE A TOJAN VIRUS IN TO YOUR COMPUTOR. PLEASE CUT AND PASTE THIS TO YOUR WALL!!!!
No such virus or Trojan exists per se. What does exist i.e., what people have evidently mistaken for a virus because they don't understand how and why it spreads is a clickjacking scam wherein Facebook users are tricked into following links that promise to show them a post that caused a girl to kill herself. No such post exists. If you click on the link, the first thing that happens is that you're asked to share it with friends or grant a third-party app permission to post to your page (bad idea). You're then asked to complete a survey (which is how the scammers make money by driving traffic to it). You'll never see that supposed wall post that caused a girl to commit suicide, because it isn't there.
So, this much is true: if you see links about some girl killing herself because of something her dad posted, don't click on them not because it's a "virus," but because it's a scam that keeps on spreading precisely because people like you and me keep getting suckered into replicating it.
IMPORTANT NOTE: It does sometimes happen that after a user clicks past the point of sharing one of these scam videos, one of the options offered is a "free download" of "security" software. Needless to say (I hope), it's unwise to accept such an offer from an unknown source because it could, in fact, contain some form of malware.
Help me track Facebook rumors:
• How to Submit Suspected Hoaxes & Urban Legends