Other site admins from which I frequent tell us no to click on the ads deliberately for racking up clicks: it can cause them to get into trouble. As I understand it that sort of carry on can be penalized under most advert contracts. Hence I only click on ads I'm piqued by.
Google ads once a day helps, the sponsor links show many hits we give to their website from ours and if we buy products after clicking the links on our site, we get credit for that