It's been estimated that anywhere from 56 percent to 62 percent of Internet traffic is automated, meaning that ads routinely go unseen by actual people at a startling rate.
Harvard Business School
As the controversy swirls over publishers selling advertisers bogus nonhuman traffic, many of the accused have screamed, “It wasn’t me! We bought bad traffic from somebody else!”
Ad-supported Internet sites created twice as many jobs (2 million total) in 2011 compared to 2007, according to a study conducted by the Harvard Business School and commissioned by the Interactive Advertising Bureau. Startups made up 19 percent (375,000) of those digital gigs, per the IAB-sanctioned report.