i have a couple of questions about google adsense: 1. how do google know if you clicked the ads yourself? 2. does the click only count the first time or will it count every time the same user clicks it? 3. how do google find out if you write "click the links to keep the site up" above the ads? i was thinking if they have those bots or whatever it is to check text, maybe you could write it in an image so the bots cant find it.