The search engine o'the day is Kosmix: The web organized for you
and it's already helped me in my niche. The idea of Kosmix is that it tries to give you relevent material and slots the results into the appropriate categories, as opposed to a mass of unsorted links. It creates a neat-looking web page that looks like a magazine article. Damned if it didn't lead me to some great material in a niche I had already researched every way I could think of. Try entering something like "automated social bookmarking" and you'll see what I mean.