A search engine system assists users in locating web pages from which user-specified products can be purchased. Web pages located by a crawler program are scored, based on a set of rules, according to likelihood of including an online product offering. A query server accesses an index of the scored web...http://www.google.de/patents/US6785671?utm_source=gb-gplus-sharePatent US6785671 - System and method for locating web-based product offerings
