During the third quarter, online advertising revenues in the United States reached $6.4 billion, based on figures from the Interactive Advertising Bureau and PricewaterhouseCoopers.
With 17 percent year-over-year growth, it was the biggest quarter yet. As TechCrunch notes, though, except for the downturn of 2009, that growth line has been shooting up since 2000.
Meanwhile, comScore reported last week that nearly 1.3 trillion display ads were delivered online in the third quarter, with the average Internet user seeing 6,000 display ads. Leading the pack, not surprisingly, was Facebook with 23.1 percent market share, delivering more than twice as many as any other publisher.
However, eMarketer figures say Facebook accounts for just 9.5 percent of the spending on display ads in the United States. This Wall Street Journal story says the number of page views and ad spending don't match up, and poses the question of whether viewers pay any attention to those ads.