The PPC company Atlas OnePoint (no link on purpose), messed with the blog king, Jeremy Zawodny. Not smart, if there is one person you don't want to mess with when your a PPC company is Jeremy. :) Basically, since Jeremy was on the panel at the SES conference, he some how got on Atlas OnePoint's email list (I did too). He got a spam email and he is not happy. Jeremy wrote about this in his entry named Atlas OnePoint: Spammers, where he posted a very interesting piece of art work.
Danny Sullivan, the face behind the SES conferences commented "I've asked Jupitermedia to look into this. My understanding was that attendee names were not given to third parties. It's not been an issue that I've ever seen come up like this before. So if something's changed, I'll work on my end to change it back."
I have found out from a source of mine how it would be possible for Atlas OnePoint to have received the list of names from JupiterMedia. I heard from another sponsor that they inadvertently gotten the email addresses and that it appears to have been an accident on Jupiter's part. So someone slipped up at Jupiter, it happens I guess. (removed some detail as per the request of a few people)