bad ads

I'm curious which ads are doing this:

"Based on your corporate access policies, this web site ( http://c5.zedo.com/jsc/c5/ff2.html?n=498;c=294/1;s=274;d=22;w=300;h=600 ) has been blocked because it has been determined to be a security threat to your computer or the corporate network. This web site has been associated with malware/spyware. 

If you have questions, please contact your corporate network administrator and provide the codes shown below."

I suppose it might be some of those 'adult' ads people are talking about. Erik, if you see this, maybe you should be talking to your ad providers.

Also, PLEASE block that stupid one which blurts out low quality dance sounds, making me have to constantly refresh to make it go away.

EDIT: Haha, I got that ad after posting this. It's the www.riplounge.com one. D:

that's actually an ad for "the economist" magazine :) http://www.economist.com/

not dangerous :)