Just had a thought, messenger keeps logs so I had a look and found the one that popped up. It was from "pnefvxml"

and the message was -

hey you are the only person online on my buddylist. tonight is my first night getting dirty online, this is the only time id ask this but will you watch me? i cant talk anymore contact me on my webcam THANK YOU. here is the link http://usapages.com/girly pages/index.html

I put a space in the middle of the link in case anyone is silly enough to click on it

Cheers

Alan