— Eric Enge and Stephan Spencer and Jessie Stricchiola and and Rand FishkinSet Theory and certain equations (described at http://forums.searchenginewatch.com/showthread.php?threadid=48) to connect terms and start to understand web pages/sites more like a human does.
Replicated under Fair Use from The Art of SEO by Eric Enge and Stephan Spencer and Jessie Stricchiola and and Rand Fishkin.