How Google know Adsense click illicit?

we often hear that google has a sophisticated system to detect suspicious click, then it was termination the account owners, but how?

In this matter would be put in short, the ways in which it relies to determine whether you're click valid or not. Google will not direct the termination of your account, but it will put the site in the list of sites that must be monitored closely and, in some cases are notified you, but in most cases is not so.

1. IP address

If click comes from the same IP, which is entering it at the expense of Adsense, are monitored, too.

2. Per click

should not normally exceed 10 percent, but will be monitored, too, that the ratio should be between 0.5 and 10%.

3. Geographic location

Google have many programs and advanced technology to enable them to determine the source of visitors to your site, so use multiple computers with different IP, for example the pressure on the ads in the Internet cafes in your area, would directly lead to sending away and will not be able to participate again.

4. Cookies

Not contact the Internet from home the same IP, as soon as the call gets to the IP is different, but keep in mind that google have cookies in your computer, so you can determine whether the same computer.

5. lines of the pressure 1

that the pressure is on the ads was to leave the site directly is suspicious, because of the site by visiting read through the site first then pushing its field of interest.

6. lines of the pressure 2

Why is the author of this IP is pressing on the ads on this site do not put pressure on the ads on other sites?

7. lines of the pressure 3

Why do visitors who enter the site directly to develop the URL directly in the browser are the most pressing of the declarations of those who are converted from search engines and other places?

8. Other google services

Google offers a variety of services - away from the Adsense - and, therefore, does not believe that you are safe because you do not fall at the expense of the Internet cafe Adsense It was pressing on your ads. These are some of the services of google: E-Gmail, Google Earth, Google Calendar, Google Search, Google Toolbar, Google Talk, Google Sitemap, Google Desktop, Blogger, or even Youtube.

9. Classification Search Engine

Many visitors to your site, and are clicking on ads periodically, and your site is not Indexed in any search engine or any special location, how can it? This is suspicious.

10. Web Design

The words "please click on the ads" or "Help us by clicking on the ads," This kind of encouragement is contrary to the terms of use Adsense, and google can use sophisticated search engines to detect and even direct access to the site by the Observer Adsense periodically.

11. Conversion ratio of advertisers

Click on the ads is a good thing for the benefit of advertisers? if not, you are in a fix.