Abstract: A method for content categorization including firstly retrieving content from a first content source from among a categorized list of content sources, extracting a plurality of words from the firstly retrieved content, associating any of the words with a category to which the firstly retrieved content is associated in the categorized list, secondly retrieving content from a second content source independently from the categorized list of content sources, extracting a plurality of words from the secondly retrieved content, and associating the secondly retrieved content with the category where any of the words in the secondly retrieved content matches any of the words in the firstly retrieved content, where the match is in accordance with a predefined heuristic.

Abstract: A multi-browser history aggregation system is provided including a client computer, a web browser with which the client is operative to selectively retrieve a web page from a server, where the browser is operative to monitor any interaction between the client and the server and store a description of the interaction in an interaction store, a categorizer operative to associate the interaction with a category and store the category information in the interaction store, and a transmitter operative to transmit previously stored interaction descriptions from the interaction store to an aggregator.