alt Hacker NewsSurprisingly, no. 29 of the 30 zero-time installs had no click at all; Google credited them to someone watching the video. The install isn't what gets the farm paid. It's what makes Google's bidding think that placement is working, so it sends it more of your ads.
It probably also so Google doesn't statistically detect the action rate is too low and suspend the customer of the bot farm from getting paid.