Interesting "Adsense" site.

[BLev]

Can someone explain this to me.
I have been using Adwords for several months now with great success to promote my site. I am working on a new concept that will incorporate my first foray into Adsense. And I have some questions about a site in particular.

Apparently they are serving Google Adwords but they are not diplaying the "Ads By Google" and the format is different than the standard Adwords formats as far as I can tell. The url is <snip>.
I know they are doing something with Adwords/Adsense becauase they my Adwords ad appears on this site regularly and i notice they are pretty high up in my referrers rank. I am not a member of any other PPC program than AdWords. My Ad shows up on this site under "Sponsored Results" and the copy is identical to my Adwords ad.

Can anyone explain what this website is doing and how they are doing it? It doesn't appear they are using AdSense to serve the ads although they are clearly serving the same Ads as Google. I'm not sure if they are even being paid for the click.
Also check-out <snip>, I think its the same.

Thanks
BL

[edited by: Jenstar at 2:46 am (utc) on Feb. 12, 2005]
[edit reason] No URLS as per TOS, please! [/edit]

[encyclo]

Welcome to WebmasterWorld, BLev.

They are probably using Google AdSense Premium Service [services.google.com] for larger sites.