Matt Cutts: Gadgets, Google, and SEO Remove result

Search Engine Journal: "Google Testing Remove Result and Spam Report Options
Matt Cutts confirms that Google is testing a new Remove Result features that lets users of Google personalized search exclude various sites from their search results. If Google Personalized Search users are sick of spam showing up in their results or irrelevant sites being listed, they can simply remove the pages.
From Cutts : One request we sometimes hear is for the ability to modify Google results, especially to block unwanted sites. A few eagle-eyed people may have noticed a user-interface experiment on Google that adds the ability to remove results. At that point, your options would normally be to 1) ignore that result, or 2) report the url to Google via our spam report form. If youre in this experiment, youll have newfound powers. Click the Remove result link and with one click you can drop that url from your search results."

Matt Cutts: Gadgets, Google, and SEO UI fun: Remove result: "One request we sometimes hear is for the ability to modify Google results, especially to block unwanted sites. A few eagle-eyed people may have noticed a user-interface experiment on Google that adds the ability to remove results. Heres what youd see. Imagine that you did the search [lynx paw clipart], and you notice one particular result that looks spammy:

You check the cached page, and you notice that if you turn off Cascading Style Sheets, theres a bunch of spammy text:"