CPM

An ad network owned by Microsoft. Their inventory is purchased upfront. They sell their inventory on a CPM, CPC or CPA basis but if it's on a CPA, their policy is to not allow geotargeting.

One of the largest ad networks in the world. Like other large ad networks, they can run media on a CPM, CPC or CPA but since it all runs on the same network, if you do a performance deal with them, volume can fluctuate significantly.

One of the largest ad networks in the world. They do CPM buys only.

They are know for their CPA offerings. Unlike many other CPA networks, they own their inventory so you are able to geotarget and the quality of leads may be higher than CPA networks that use an affiliate network.

One of the largest ad networks with 13,500 sites for display advertising. They do a revenue sharing model where they share 50% with their publishers. Like other large ad networks, they can run media on a CPM, CPC or CPA but since it all runs on the same network, if you do a performance deal with them, volume can fluctuate significantly.

They also do lead generation using a co-registration program. They have a separate network for this, comprised of 1,500 sites.

They have two networks, a premium network and a performance network.

The premium network is an arbitrage ad network, which means that they buy inventory up front and then are on the hook to sell it. Their site list is transparent. They stay away from user generated content sites, so no Youtube, Myspace or Photobucket. There are roughly 450 sites in their premium network. Targeting capabilities on the premium network include:

• Demographic
• Behavioral
• Contextual
• Geo
• Retargeting (site and banner)

Their performance network is an affiliate network on which they run CPA deals.

Ad network owned by Microsoft. They are known for their CPA capabilities. They cannot geotarget if running on a CPA.

An ad network comprised on Yahoo sites, the former Blue Lithium's sites and the former Right Media's sites. Their value prop is a dynamic CPM tied to a CPA goal and a real-time optimization system.

Includes parents.com, americanbaby.com, child.com, familycircle.com, bhg.com, lhj.com, betterrecipes.com

Can do demographic targeting.

cbs.sportsline.com

Sports Illustrated

One of the larger ad networks but runs media only on a CPM basis. They are an ad exchange, so they purchase media from other networks.

Includes aol.com and the AOL client.