I’ve got a customized search tool at: http://www.rollyo.com/fnpfa/fairbanks_government/. It’s designed — though not carefully — to search the levels of government, up to the state level, that a citizen of Fairbanks belongs to and might need to get information from.
If I really wanted to put some work into this, I’d find more domains to add to this. But I think I get the point: “Wow! Customized search engines!” A library might create various topical search engines for its patrons and make them available for quick information.
Rollyo, I notice, does not search Alaska’s Digital Archives, which is a real disappointment to somebody who’d like to create an Alaska-history search engine.