If you perform a search for the major torrent website The Pirate Bay you expect it to be the number one search result for its main keyword due to its popularity. If you search for The Pirate Bay (the Piratebay, Piratebay) on Google you will witness that it is indeed number 1 but if you perform the same search at Yahoo you will not find the domain in the results list at all.
The question is if this is only a glitch or if the website has been removed from the results page manually. A search with the site parameter reveals more than 500000 indexed pages of The Pirate Bay which means that it most likely was not kicked out of the index.
Has the result deliberately been removed by Yahoo ? We do not know for sure at this moment but it surely looks this way. If you search for the full domain name only thepiratebay.org Yahoo finds about 30 results. It leads to an interesting question if Yahoo did indeed remove the result manually.
Should search engines filter search engine results without a court order ? I guess we have to wait a little bit longer before we know what really is happening at the moment and why the result is not appearing anymore.