Criticism

Due to concerns about click fraud, 'Google AdSense' has been criticized by some search engine optimization firms as a large source of what Google calls "invalid clicks", in which one company clicks on a rival's search engine advertisements to drive up the other company's costs. To help prevent click fraud, AdSense publishers can choose from a number of click-tracking programs These programs display detailed information about the visitors who click on the AdSense advertisements. Publishers can use this to determine whether or not they have been a victim of click fraud. There are a number of commercial tracking scripts available for purchase.
The payment terms for webmasters have also been criticized Google withholds payment until an account reaches US$100, but many micro content providers[require a long time—years in some cases—to build up this much AdSense revenue. However, Google will pay all earned revenue greater than US$10 when an AdSense account is closed.
Many website owners complain that their AdSense accounts have been disabled just before they were supposed to receive their first paycheck from Google. Google claims accounts have been disabled due to click fraud.[
Google came under fire when the official Google AdSense Blog showcased the French video website Imineo.com. This website violated Google's AdSense Program Policies by displaying AdSense alongside sexually explicit material. Typically, websites displaying AdSense have been banned from showing such content. Some sites have been banned for distributing copyright material even when they hold the copyright themselves or are authorized by the copyright holder to distribute the material.
It has been reported that using both AdSense and AdWords may cause a website to pay Google a commission when the website advertises itself.


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