Rollyo is a customizeable search engine that allows the user to set their own search parameters without programming. Rollyo says by putting in your own parameters you can skip irrelevant search results. Whats even better is like minded people can share their searchrolls for even more access to what you're looking for. Without parameters, for a subject I typed in, Rollyo returned 797,000 results and for the same search Google returned 374,000 results.
Putting in personalized criteria could be a very useful timesaver in the library for narrowing search results to those most specific.