Casale Media have emerged as a top network, offering great rates for leaderboards, skyscrapers and pop-unders, and paying 70% of the revenue with a minimum payout of $25, they are hard to beat.
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ValueClick Media is the resulting network of the acquisition of Fastclick by Valueclick in late 2005. This new combined network combines the best part of Fastclick, namely their impressive publisher interface and statistics, and Valueclick, which was their large international media selling team.
Tribal Fusion have emerged as one of the leaders in internet advertising by only representing high quality sites with original content, and so are very difficult to be accepted by, although they do offer the highest paying campaigns and a great service.
Burst Media are one of the longest established online advertising network, being established in 1995, and have survived due to their high quality network of publishers and advertisers, and the great targeted ad buys which they are able to get for independent sites.