You can already create your own search engine, and have Google serve the same ads on it as they would for their own search. I don't know what the product is cal

You can already create your own search engine, and have Google serve the same ads on it as they would for their own search. I don't know what the product is called, or what the requirements for signing up for it are, but it is how a lot (most?) of the smaller search engines monetize. (I just checked Ask Jeeves and Startpage, and they were both serving ads from Google.)