New York - Internet advertising revenues from 2007 are expected to come in at $21.1 billion, in a year that saw record revenue levels in all four quarters that propelled the market up 25% over 2006's record $16.9 billion, according to data from the Internet Advertising Bureau (IAB) and PricewaterhouseCoopers. Still, the gain of $4.2 billion in revenue in 2007 was still less than the $4.3 billion in growth, and 35% revenue increase registered between 2005 and 2006.

The report estimates that fourth quarter 2007 Internet ad revenues reached a record $5.9 billion -- a 13% increase over the third quarter of 2007 and 24% increase over the fourth quarter of 2006.

"The continued record growth evidences the importance and uniqueness of interactive media to both consumers and the marketers that are trying to reach them," said David Silverman, a partner at PricewaterhouseCoopers.

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