In October, I posted the Internet Advertising Bureau’s estimates for U.S. online ad revenue for 2007; at the time, they were predicting $20 billion to $21 billion.
According to the numbers released today (which I saw first in TechCrunch), the IAB’s preliminary estimate for 2007 is that Internet advertising hit $21.1 billion in the U.S. – just slightly higher than they initially predicted.
TechCrunch also reports on the estimated numbers from a couple other sources:
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