Give the adult websites their own independent search engine and get them off all of the other search engines.
When you walk into your local mall, grocery store or discount center you are not hit in the face by adult entertainment merchandise. They have their own store that you have to search out and enter only if you want to. However on the internet if you hit the wrong key things can pop up that you wish you had never seen and surely do not want your children to see.
Let the adult websites stay. Let them keep their original web address. But let's move them out of the main stream search engines and into an exclusive search engine for adult entertainment, merchandise, blogs and more.
Adult entertainment has boundaries in the real world. It is time to set some in the cyber world.