Yahoo release a do-it-yourself search engine, called Yahoo! Search Builder:
“With Yahoo! Search Builder you can create a custom Web search engine by selecting a set of trusted sites to search across or you can tune the search algorithm to the topic of your choice. Beyond Web search, Search Builder includes Site search and News search.”
I need to evaluate this further, and there’s not a lot of detail available until you sign in, but the real problem is there doesn’t appear to be any revenue share? Without that, I guess it may be a useful vertical search tool in its own right, but you’ve got to ask: are webmasters going to fall over themselves to send non-monetarized out-bound traffic?
Perhaps webmasters aren’t the target audience. Maybe I’m missing something.