I've reported all the sites posted so far--if you look, you'll see nothing but a link for an ad.
Reminder for our newbies: DON'T POST A REPLY!!! It only makes the job of deleting the spam more difficult for the Kittenmaster.
Just hit the "report" link. This much I learned the hard way: you have to type in a halfway-complete sentence. The one-word "spam" explanation will cause your report to be rejected. "Appears to be spam" is acceptable, though.