The World Wide Web has two parts: the surface web and the deep web. The Deep web refers to those contents of the World Wide Web that are not visible to the search engines. Following a general discussion of the deep web, extraction of deep web information, how deep web affects: search engines, websites, searchers and the solutions to deep web problems, comparing deep web and surface web, we implement a deep web search tool called AJBDeepSearch Skryť popis