[Uzinero]

Adclicking. Used to know somebody on a different forum who said they had a huge botnet and that they used a script on each one of them that made them view a page with their ad on it 100 times and then click it once, then view it another 100 times, all in a silent window. They said they did it to keep the CTR down and after a few months they said they had enough slaves they were making around 1k a day just from adclicking.