well, i made some money off autoclicker back in the day, but that was when we installed software that showed ads and paid us for watching them and clicking on a few of them...
but, if you use it to generate clicks on your own site, it tracks the ip from which the click originated. it also tracks the number of computers access the site, it also tracks unique visits and it tracks the clicks and even some browsing habits of the people who go to his site.
not to mention there is a quote of how much people usually click ads, once you go above it, you're accused of cheating and even get your account suspended - happened on a site i was a forum mod on, people clicked ads like crazy to help the site revenue only to see it nearly banned and cut off one of its money sources.