I wonder how many porn traffic sites employ this type of technique.
False Impressions From Adult Sites Get Sold to Publishers and Then to Advertisers. Here's How:
Porn generates a huge amount of online traffic. But did you know it also generates quite a bit of ad revenue? None of it is direct, of course; mainstream advertisers aren't buying adult sites, and you will never see a Chrysler or a Kraft ad there. But their ad dollars could find their way back to adult sites through a number of click-laundering scams commonplace to the web today.
One of the most common: adult sites that automatically generate millions of fake impressions that are sold through middlemen to publishers, and ultimately to advertisers. A ComScore audit found some adult sites generating as many as 200 false impressions in a five-minute period, many of which end up reported as legitimate impressions to advertisers......
The rest here:
adage.com