How attention flows on the web
Despite all of this advertising spending online continues to grow. The reason is that those ads which are seen generate a perceived return, based on the measurement criteria being used to evaluate performance.
“Bot fraud, digital advertising’s albatross, will suck $6.3 billion from the industry next year.”
Nearly 25% of Video Ad Views Are Fraudulent, and 6 Other Alarming Stats
“The total percentage of bot-related web traffic is actually down this year from what it was in 2013. Back then it accounted for 60 percent of the traffic, 4 percent more than today.”
Bots Now Outnumber Humans on the Web
The Google research referenced in the headline quote can be found here.