There is no magic fairy dust protecting Macs - Dai Zovi, security researcher and co-author of The Mac Hacker's Handbook.
I have not seen a malvertizement featuring this site before - muchmusic.com
dreammates.com - this one dumped me at virusremover2008.com (domain created on 20 May 2008)
Here's a question. How do you determine which ads on a page are the malware culprits?
I run a highly trafficked site and we use third-party ad companies (Burst!, etc,). We've had problems with malware scumbags slipping their crap into our revenue stream.
I need to suss out which the bad guy is so I can tell the ad provider to pull it.
did you mention where you came across these?