Internet is full of good and bad people, just like the real world we live in. Some time these characters in order to take revenge, try to get your AdSense account banned by click bombing your site or by placing your AdSense ad code on an inappropriate site.

While Google is quite good at detecting false clicks and often discounts them, however it is hard for them to establish whether or not a publisher has placed the ad code on an inappropriate page or if it’s the handy work of jealous rival.

But all that can change, now you can specify the URL of the sites you will be displaying ads on and in case some one places your ad code on a URL not specified by you, the ads will be displayed, however they won’t have a bearing on your account.

Here is the official word from Google regarding this feature:

What is my Allowed Sites list?

Allowed sites are sites or URLs on which AdSense publishers allow or wish to have their Google ads displayed. If a URL displaying your AdSense ad code is not on your Allowed Sites list, ads will still be displayed, but impressions and clicks won’t be recorded, advertisers won’t be charged, and you won’t receive any earnings for that URL.

We’ve added the Allowed Sites feature because we’ve learned that some AdSense publishers are concerned about potentially malicious behavior from others on the web, such as stealing their ad code and placing it on an inappropriate site. By offering this feature, we allow AdSense publishers more control over which sites or URLs can have their AdSense code.

Screenshot of the Allowed Sites List

I have just started using this feature and if I were you, I would do the same ASAP!