1. A method for automatically classifying a markup language text that is accessible at an Internet domain comprising: (a) retrieving from one or more data repositories, data associated with the Internet domain; (b) computing a first identifier for the Internet domain based on at least the data associated with the Internet domain and the markup language text; (c) computing a measure of similarity between the computed first identifier and each of a first plurality of previously classified identifiers; and (d) assigning the markup language text a classification based on the computed measure of similarity between the computed first identifier and each of the first plurality of previously classified identifiers.