While you typically hear just a handful, there are many online ad networks. Check out this list of online ad networks.
So whether you are advertiser or a publisher, the options available are plenty. Do the necessary research and pick the right ad network for you. Publishers should note that not all ad networks accept them into their program. Most of them expect a large size of traffic to the website.
That list is missing the ad rep firm I use and have positive experiences with. http://www.mediamayhemcorp.com
They are not like your ordinary ad network, they provide a lot more services for publishers and the owners are very knowledgable and very nice and easy to work with.
Comment by Will Tran — March 1, 2008 @ 5:45 am