FOAF Spam - Unsolicited "junk" e-mail sent to large numbers of people by way of social networking services to promote products or services.
(All the junk messages I get on Orkut just by being "friends" with Scoble)
Of course, the lamest part of the internet for me is that whenever I feel I am being clever and original, I can search and be reminded that I am not. See here, here and here. Thank you.