BEST PAY PER IMPRESSION NETWORK

There's no "best". When you work with these companies, eventually you'll find that you may need more than just one to get a good "fill" rate. The fill rate is important because you want to get paid for your traffic. If the network can't match enough ads to your traffic, then you'll wind up showing "public message ads" just like with Adsense.

Here's a list:

Fastclick/ValueClickMedia - I work with this one and it's one of the better paying ones
AdsDaq - pretty good, pays on time
Casale - I guess this one is comparable to Burst Media, but I never worked with them
Cast ads - don't know
Interclick - don't know
Revenue.net - don't know
Targetpoint - don't know
advertising.com - big network, but you need half a million monthly impressions and more I think
Real 24/7 Media - I've heard good things about them
Burst Media - low fill rate, but then again, I use it as a back-up

If you're just starting out, you'll have a good chance with Casale or Burst Media as they only require reasonable monthly impressions per site in order for you to join their network (about 10K impressions). ValueClick Media and AdsDaq may be a good start as well.

If you're getting 500K impressions and more each month, then go with a big network like Advertising.com (now known as Platform A or something like that).

Best!

- Jay

JAY, Thanks very much for this info. i really appriciate it

thanks for the input Jay

I wonder if anyone could list few ad sponsors who liberally encourage pop-under ads ?
one that I've heard of is: paypopup or something

any more ?

for medium ans small sites .. clicksor is good

clicksor is recommended for beginners.

Lidango,

Yes, the original question was about CPM (cost per thousand)

For anyone wanting interested in PPV, there's MediaTraffic. There also was Zango (180 Solutions), but I think they went under. There was a post about them recently here on the forum.