WTM said:
Mamma:
http://www.mammamediasolutions.com
FindWhat:
http://www.findwhat.com/content/advertiser/index.asp
Kanoodle:
http://www.kanoodle.com/about/advertise.cool
They will deliver targeted traffic much cheaper than Google or Overture and they all offer bunch of advertizing options.
Personally, for PPC traffic, I've always predominantly used
GoClick, although I also have accounts with
Kanoodle, and
Enhance Interactive (formerly Ah-Ha.com), but I haven't used those two extensively enough to give any kind of opinion on their quality. And hence, having only really used GoClick to any real degree, I can't really compare/judge its efficiency either, with no real basis for comparison. Suffice to say though, I've never found PPC advertising to offer a worthwhile CPC conversion for my sites, but I don't know if that's the fault of the PPC engine, my sites, or anything in between.
I recall seeing another advertising revenue program like Google AdSense a little while ago, it had a strange name, like 7Clicks or something like that. The site I saw it on was offering click incentives, which is strictly against Google's policies, which I figured must have been why they were using this other company instead of AdSense, because it seemed fairly shoddy and inferior to me. {shrugs}