If adlogger is still available, you could give that a go. I used to use it all the time, until Google let me know that actually they do keep an eye on click bombing, and there was no use in letting them know when it happens. The sad truth is, blocking an IP means whoever click bombs you will simply use another IP. If I were you, just let Google know what's going on, and they will ususally take control of the matter. If you're a genuine publisher, they won't punish you for this.
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It isn't always a good thing - and you risk being banned if they think it's you. Its can generate more revenue for you inadvertantly, but overall it carrries far more risks. You don't really want to be clickbombed.
There is no need to worry about being click bombed if you are an honest person. I used to report the log files to google in the past about click bombing but google said that it would take care of the matter and there was no need to report them as they were continuously monitoring each and every move on the web.