I've always wondered how valuable internet ads are. My mind automatically skips over ads. I don't even see them, let alone click on them. Is that unique to me? Is there a large chunk of viewers out there that are ad click happy? Seems like anything dependent on ad revenue would eventually fail when marketers discover that nobody pays attention to their ads. Since that hasn't happened yet, I assume there must be people out there that do click on all of these ads.