An article I always refer to when talking to people, techies and non-techies alike, is http://techcrunch.com/2011/03/25/search-googles-castle-moat/ http://techc

An article I always refer to when talking to people, techies and non-techies alike, is http://techcrunch.com/2011/03/25/search-googles-castle-moat/ http://techcrunch.com/2011/03/25/search-googles-castle-moat/.