I've received a spurious pm from 'symbiosis' which, depending on the source you consult, may be either spam or a virus. I know not which, but suggest that if you get one you should ignore/delete it The moderators have been alerted.
I had that too. I'm assuming its a techie who gets off on writing a script that bascially registers and sends PM's with a view to weighing down web sites. Whatever floats your boat!