AdKnowledge, a Kansas City, Missouri-based online behavioral advertising firm, has riased a whopping $48 million in venture funding…the funding was done by Technology Crossover Ventures.

Adknowledge, which says it has more than doubled its revenues every year since its founding in 2003, will use the funding to “accelerate its market expansion”.

The company recently hired Brett Brewer to serve as the company’s president and serve on its board of directors. Brewer was formerly president of Intermix Media, which was sold to News Corp last year.

SmartMoney:  Adknowledge buys ad space directly from content providers and charges its customers on a pay-per-click model that can range from 30 cents to as much as $6 or $7 per click, said Brewer. The company claims to have more than 20,000 keyword advertisers, including Venture Direct Worldwide Inc. and Debt Settlement USA.