6. A non-transitory computer readable storage medium storing instructions that, when executed by a computer, cause the computer to perform a method of extracting information form internet search results in response to a query by a user, said method comprising the steps of: A) normalizing said search results by formatting said search results into a standard free text format, each of said search results having a number of paragraphs included therein, said query including a sequence S+ of words from said search results that the user wants displayed and a sequence S− of words from said search results that the user does not want to be displayed, so that S+∩S− is an empty set; B) crawling said normalized search results to yield candidate information, said crawling step being accomplished by generating a hash table H+ corresponding to said sequence S+ and a hash table H− corresponding to said sequence S−, determining an actual frequency count (AFC) for each entry in said hash table H+ and said hash table H− and calculating a possibility for each entry in said hash table according to the formula possibility = ∑ H + ⁡ ( seq ) ∈ paragraph  H +  ⁢ (  paragraphs  - AFC ) ⁢ ⁢ if ⁢ ⁢  H -  ⁢ ⁢ is ⁢ ⁢ zero ⁢ ⁢ ( e . g . , if ⁢ ⁢ S - is ⁢ ⁢ left ⁢ ⁢ blank ) , ⁢ possibility = - ∑ H - ⁡ ( seq ) ∈ paragraph  H -  ⁢ (  paragraphs  - AFC ) ⁢ ⁢ if ⁢ ⁢  H +  ⁢ ⁢ is ⁢ ⁢ zero ⁢ ⁢ ( e . g . , if ⁢ ⁢ S + is ⁢ ⁢ left ⁢ ⁢ blank ) , ⁢ otherwise , possibility = ∑ H + ⁡ ( seq ) ∈ paragraph  H +  ⁢ (  paragraphs  - AFC ) - (  H +   H - ) ⁢ ( ∑ H + ⁡ ( seq ) ∈ paragraph  H -  ⁢ (  paragraphs  - AFC ) ) Where |paragraphs| is the number of paragraphs in said normalized search results, AFC (actual frequency count) is the number of times each entry in said hash table H+ and said hash table H− appears in said search results, |H+| is the number in entries in said hash table H+, |H−| is the number in entries in said hash table H−, and C) selectively displaying said candidate information according to a predetermined algorithm to yield said information.
8. The non-transitory computer readable storage medium of claim 6 wherein said method is in pedagogical mode is in decision support mode and said step D is accomplished by: D1) setting a possibility threshold; and, D2) presenting said crawled search result paragraph having a possibility above said threshold as said information, in decreasing numeric order.