Rated 5 out of 5 stars
I've tried a few "Web search assistants", none to my real interest. DeeperWeb is all together "smart", helpful, none obtrusive nor "childish", a calm and efficient expert in its way. In fact in relates a search to related words, concepts, and facts. Surprisingly it will be as well a companion to a "fuzzy logic" web search (giving a hint for where else to wander) as a professional assistant for a serious, deep quest on the Web.
I tend to be skeptical, but I am here enthusiastic. A very nice achievement, yet and still a work in progress as the extension's home page notifies it : best cakes need not the cherry :)