search engines that reach places others can’t

It is said that Google reaches about 167 terabytes of information on the open web but there are another 91,000 terabytes sitting in the ‘deep web’ that Google, Bing, Yahoo and other mainstream search engines can’t reach. Here’s an interesting article on 10 search engines, such as Infomine, DeepWebTech and Scirus, that can search the deep web to find those hidden libraries of knowledge you never knew existed.