It's some kind of pornbot, up over 55,000 games now!
I'd forgotten that I had an account here, and just got a challenge notification in my email, with a nasty note attached and a link I could follow to boink girls.
I was going to report to an admin, but don't see a link for that, so I'll just add my comment.
I also received a challenge from a conctact: Alice sweet.com and the warning not to accept the challenge and not to open the message but to delete it, so I delete it and the challenge.