Brevet accordé à Yahoo. Web Trafic est bon pour le classement.

Using network traffic logs for search enhancement
Invented by Arkady Borkovsky, Douglas M. Cook, Jean-Marc Langlois, Tomi Poutanen, and Hongyuan Zha
Assigned to Yahoo
US Patent 7,398,271
Granted July 8, 2008
Filed April 16, 2002