One of the most common trick being employed by publishers using Google Adsense as a revenue model is to place Google ads that have maximum chances of accidental clicks. While it is a good idea to blend the ads well with the content, certain ad placements can land a publisher in some trouble with Google.

Pay per click marketing, kick started by Google in 1999, has been doubling its growth virtually ever year. Being one of the most inexpensive and effective way to reach the target audience, it continues to gain popularity in the online marketing segment. Virtually all major search engines, as Google, MIVA, Yahoo Search Marketing, Search 123 and Kanoodle.com offer Pay per click (PPC) campaigns, where the advertiser pays only when a visitor clicks the ad link form the site of the publisher. This online advertisement has grown so popular that in many segments, it has outgrown and replaced print media campaigns as well. So far, the biggest threat to PPC is the Click-fraud. However, for many reasons, such as petty gains by publishers, or your competition trying to pull you down, click-fraud too is growing as biggest menace to PPC.
You can estimate the nuisance of click fraud from the fact now a days many websites have come up that approach publishers to get ads clicked on their sites from surfers across diverse regions. Revenue generated from such ad clicks, is divided between publisher and such agency that arranges the clicks. The site that arranges for ads to be clicked also enrolls members to click the ads and shares the revenue with them.

While Google Adsense is most successful and largest online advertising program on the net, its probably is one of the most abused program too. Google has faced maximum number of lawsuits against this program and has reportedly settled many suits paying a large sum of damages.
It is well known that Google has its own proprietary logic of method of discovering bogus clicks and has over the period developed proven methods to track these down. Such is the effectiveness of these methods that the advocates who are in the profession of fighting cases against Google first satisfy themselves that you actually are a genuine victim and on your part did not play any tricks with Google. Though, it may appear a simple precaution, it actually is not, as probably the same advocates don't exercise half as much caution if you want to hire them to defend a murder law suit.