Analysts estimate that click fraud is about between 20-30 percent of the pay per click industry. It is a huge problem and Google has become stricter on this issue. Google was forced to pay refunds to their advertisers in many cases for that reason. So, although the most profound reason for termination of your Adsense account is clicking your websites ads, there are other reasons for Google to terminate your account, you should be aware of.
Do not hide text in your web pages. The trick is old but still many use it. Using small text filled with keywords at the same colour of the background will not help. Google not only will terminate your Adsense account but also ban your website in the free regular listings.
Do you use page cloaking? You should reconsider. This tactic is about a script which redirects the webpage your link supposed to follow to another webpage. Extremely dangerous for Adsense strategies, they lead to termination finally and furthermore they will not list your website in regular listings also.
Link Farms. This is an extremely dangerous tactic which is useless at the same time. Googles algorithms are so advanced that can detect immediately...