AdEngage
http://www.adengage.com/
I bought nearly $100-$200 in ads and recieve a ton of better clicks than AdBrite. However, they do have some bad websites like King Games which send clicks from the same IP Range (or so I've heard)
Anyway, a few websites are actually worth the money considering a ton of them are $5 or $1

Most of them were for Sixty6 Arcade, the sucky part was that the server went down for a while this morning so I didn't get the full effect. They also accept PayPal!!
Another bad thing is that they don't have ONLY Sponsored Links like AdBrite. They also place their network ads into your rotation!