I admit it: I sometimes click ads for products/services I do not like. It's like flattr, but with the advertisers' money. <:)

DON'T DO THAT ON SITES YOU LIKE. Google will TAKE THE SITES MONEY AWAY and CANCEL THE OWNERS ACCOUNT FOR LIFE.

Sorry I had to yell.

Whenever I do that (rarely) I surf around the linked site a little bit. Will Google cancel accounts because the advertisers have low conversion rates? I could see them canceling accounts when a lot of visitors clicked the ad and stayed on the linked page for only a few seconds but I’m honestly wondering whether they will also cancel if a lot of people merely buy nothing.

Usually they only cancel it that way if the person asks people to click on his ads.

But the way they detect that is if a sites suddenly sees a lot of bad conversions.