The DeeperWeb add-on for Firefox, which I’ve been using for about a week, is an all-around winner. When Google is right on the money, DeeperWeb confirms it by looking at different datasets – sort of like searching Google Scholar.Google ordinaire, and – well, name some other datasets. And it keeps the original Google results front and center (see screenshots below tje jump).
I’ve already made it my default search engine.DeeperWebs a keeper.