Are there any ad-placing services that don't mind that the page is nothing but a page of ads?

Someone else with a .cn tld is pointing to my IP address. I currently have that site on its own name based virtual host that responds to every request with a 403, but I figure if I am paying for the incoming bandwidth, I might as well try to make some money off it.

I don't want to actually create any content for this site, which prevents me from using adsense. My only requirements are that it is free for me to sign up and that they don't mind the lack of content.