Until now it was possible to use the public id of any Adsense webmaster and place it on bogus sites to get the account of that webmaster banned. The public id is visible when someone views the source code of a website that uses Google Adsense ads for monetization. It is a simple copy and paste process to embed another webmaster's Adsense ads on unrelated websites.
Webmasters who investigate their account ban may stumble upon sites that display advertisement with their Adsense ID embedded. Bad neighborhood sites, or sites in breach with the Adsense TOS could have led to the ban of the account. It was highly difficulty to prove to Google that particular websites were not related to the Adsense account.
Webmasters asked Google to implement the feature for a long time and finally Google decided to add it. The Adsense Setup tab of the Adsense account has a new tab called Allowed Sites. You have the option to add all of the sites that are your own and have the Google Adsense code implemented.
Ads will still show if they are implemented on a site that is not in the list but will not generate revenue. The problem that I see here is that it is not possible to get a list of sites that you probably missed when adding them. You could accidentally block one of your own sites if you are not careful with the feature. This should not be a problem for webmasters with one or two sites that use Adsense, but webmasters with dozens or hundreds of sites could easily forget to add one to the allowed sites listing.
I'm also not sure about cached pages and proxies which could turn out to be problematic if many of your visitors use proxies to connect to your sites.
Will you be using the new feature ?
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.