One of the cool things that Google provided during their SearchWiki experiment was the [x] button. An option to remove a site from further search results. This

One of the cool things that Google provided during their SearchWiki experiment was the [x] button. An option to remove a site from further search results. This could easily give some power back to the users to not get hassled by such spammy site, as well as give Google some inputs to take action against such sites. Bring the [x] button back, Google :)