I got a note saying that "your account has been terminated for violating our terms of service". It went on to say something about the section for "creating invalid clicks by deceptive means" (which I did not do). The thing is, when Google claims this was occurring, I was literally 600 miles away in New Orleans on business travel and not at my machine (which was on).
This is the thing. I believe they don't blame you personally for this action, but since they have no way of determining who it really is and for what possible purpose, they assume it's you trying to generate income. I believe they did not get the "clicks" from your IP address.
I have written them roughly a dozen times and get three rotating stock answers, including one which says that "explaining to you why you were terminated would disclose proprietary information" (gee, an IP address..)... There is no contact number (that they will answer), there is no one listening, and I'm fairly certain that the big bad Google couldn't care less.
Whatever the reason (someone "helping" or someone maliciously trying to screw you over), google really sucks here for not having proper way of sorting things out.
Whatever it is, it sure sucks. While it could be that someone delibirately did this to hurt your business, it's still just one possibility. Considering the willingness of Amiga users to "vote" in random polls with Amiga selection in them, I wouldn't be surprised to learn someone just tried to "help", without malicious intent.