AdCamo is billed as the first and only background advertising network.
The concept is simple, like any ad network you sign up and display ads, but along with a banner the advertiser also gets to post their image(s) on your sites background as well. The ads are offered on both a CPC and CPM basis.
Background advertising isn’t new, Perez Hilton regularly uses the format, but this is the first time I’ve seen an ad network dedicated to these sorts of ads. Ugly, in-your-face, intrusive and overwhelming are a few words that come to mind, but I don’t hate the idea as much as say automatically playing audio ads, but I’m not fond of the idea either. Ultimately you can be the judge.
A couple of examples below.