Tired of waiting for Google and its algorithms to filter content farms and other shady sites out of your search results? Then you can now finally take things into your own hands thanks to an "experimental" extension that Google has just made available for its Chrome web browser. That works about as straightforwardly as you'd expect -- once installed, you'll simply see a link to block a site along with each search result, and you'll also be able to unblock sites at any time if you go a bit overboard. What's most interesting, however, is that Google says it's going to study the feedback it gets from extension and that it will consider using it as a potential ranking signal for its search results.

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