57. A method for mapping patterns of location identifiers of web pages to a semantic type using a tag, the method, comprising: selecting the tag from multiple tags associated with an initial content source; using the tag as a search query in locating a set of search results using a search engine; identifying a set of location identifiers each of which corresponds to one of the set of search results; extracting a set of patterns from each of the set of location identifiers; storing the set of patterns in a machine-readable storage medium as being mapped to a semantic type corresponding to the tag; wherein, each of the set of patterns corresponds to the semantic type with which content embodied in each of the set of search results has a semantic relationship; assigning a weight to each of the tag; wherein, the pattern extracted from the location identifier has a trustworthiness rating that corresponds to the associated weighting of the tag.
57. A method for mapping patterns of location identifiers of web pages to a semantic type using a tag, the method, comprising: selecting the tag from multiple tags associated with an initial content source; using the tag as a search query in locating a set of search results using a search engine; identifying a set of location identifiers each of which corresponds to one of the set of search results; extracting a set of patterns from each of the set of location identifiers; storing the set of patterns in a machine-readable storage medium as being mapped to a semantic type corresponding to the tag; wherein, each of the set of patterns corresponds to the semantic type with which content embodied in each of the set of search results has a semantic relationship; assigning a weight to each of the tag; wherein, the pattern extracted from the location identifier has a trustworthiness rating that corresponds to the associated weighting of the tag. 61. The method of claim 57 , wherein, the tag is selected in response to determining that XHTML or HTML of the initial content source includes text comprising the tag.