"they own the base of user activity data" They don't necessarily OWN the base of user activity, if others figure out how to sniff it out: http://googleblog.bl

"they own the base of user activity data" They don't necessarily OWN the base of user activity, if others figure out how to sniff it out: http://googleblog.blogspot.com/2011/02/microsofts-bing-uses-google-search.html http://googleblog.blogspot.com/2011/02/microsofts-bing-uses-...