AlltheWeb, once popular search engine (very popular with Mac users for some reason) seem to be getting some attention from its “parent” Yahoo. AlltheWeb was bought by Overture in 2003, Overture also acquired AltaVista, Overture itself was then acquired by Yahoo.
A few days ago, Yahoo released AlltheWeb LiveSearch , a tool that generates a dropdown menu showing keywords and phrases that might match the query as it is being typed.