They use a combination of algorithmic tracking and human tracking to observe abnormalities in clicks. But even so, it is advisable to monitor your own website statistics to ensure that nothing abnormal is happening.
Do not try to increase clicks -- Google can disable your account for click fraud if they notice you attempting to game the system. The best thing to do is put a lot of content on your site and scatter the ads throughout.
No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
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