6. A non-transitory computer readable storage medium storing a computer program for causing a computer to execute a method of identifying a document within a block of text, the method comprising: tokenizing a block of text into a plurality of text tokens according to at least one rule parser; comparing each of the plurality of text tokens to a plurality of document tokens sequentially and determining if the text token matches one of the plurality of document tokens, wherein the plurality of document tokens correspond to a plurality of documents which have been tokenized according to the at least one rule parser; filtering each matched text token according to predetermined filtering criteria to generate one or more candidate text tokens; and matching a sequence of candidate text tokens from the one or more candidate text tokens to a sequence of document tokens, wherein the sequence of candidate text tokens occur in sequential order within the block of text, wherein the predetermined filtering criteria includes a plurality of stop words and a plurality of common words, and wherein the filtering includes performing a stop word analysis of comparing the matched text token to the plurality of stop words, such that (i) if the matched text token matches one of the plurality of stop words, a next text token in sequential order, of the plurality of text tokens, is compared to the plurality of document tokens, and (ii) if the matched text token does not match one of the plurality of stop words, a common word analysis of comparing the matched text token to the plurality of common words is performed, such that (a) if the matched text token matches one of the plurality of common words and is not capitalized, the next text token in sequential order is compared to the plurality of document tokens, and (b) if the matched text token does not match one of the plurality of common words, the matched text token is identified as a candidate text token, and the next text token in sequential order is compared to the plurality of document tokens.
6. A non-transitory computer readable storage medium storing a computer program for causing a computer to execute a method of identifying a document within a block of text, the method comprising: tokenizing a block of text into a plurality of text tokens according to at least one rule parser; comparing each of the plurality of text tokens to a plurality of document tokens sequentially and determining if the text token matches one of the plurality of document tokens, wherein the plurality of document tokens correspond to a plurality of documents which have been tokenized according to the at least one rule parser; filtering each matched text token according to predetermined filtering criteria to generate one or more candidate text tokens; and matching a sequence of candidate text tokens from the one or more candidate text tokens to a sequence of document tokens, wherein the sequence of candidate text tokens occur in sequential order within the block of text, wherein the predetermined filtering criteria includes a plurality of stop words and a plurality of common words, and wherein the filtering includes performing a stop word analysis of comparing the matched text token to the plurality of stop words, such that (i) if the matched text token matches one of the plurality of stop words, a next text token in sequential order, of the plurality of text tokens, is compared to the plurality of document tokens, and (ii) if the matched text token does not match one of the plurality of stop words, a common word analysis of comparing the matched text token to the plurality of common words is performed, such that (a) if the matched text token matches one of the plurality of common words and is not capitalized, the next text token in sequential order is compared to the plurality of document tokens, and (b) if the matched text token does not match one of the plurality of common words, the matched text token is identified as a candidate text token, and the next text token in sequential order is compared to the plurality of document tokens. 8. A non-transitory computer readable storage medium according to claim 6 , wherein the method further comprises: acquiring the block of text from a webcrawl.