I first experimented with Google's AdSense service back in early 2006. One of the thoughts that arose back then in my mind was this - is it possible for someone - say someone who dislikes/hates me - to get my Google AdSense account banned/disabled, by deliberately causing repeated clicks on the ads (either automatically or manually)?
I felt that the answer should be yes. Ever since, I wanted to pen this concern on my blog. And today - after 4 years - when I (finally) started writing this post, I was (a little) surprised to see that many other people have already voiced concerns regarding this (here and here).