http://www.fastclick.com/about/opt-out.html


It seems to make it so when you install the cookie to get rid of pop unders, It also makes it so that you won't be paid any served ads only psa one's.

If any of you use fastclick on your site site test it, by instaling the cookie and seeing if you are only served psa ads, as far as I seen it even stops your own defaults from being served.