I like the idea of offering it after the first search. I see the value of this kind of search engine as introducing some novelty/entropy into the system. I coul

I like the idea of offering it after the first search. I see the value of this kind of search engine as introducing some novelty/entropy into the system. I could imagine using it as a backup to primary search engines, in which case I'd definitely want to get some randomness going. I wouldn't just want the "million-and-eleventh" site (so to speak) when clicking next.