This is pretty much Jaron Lanier's argument in You Are Not a Gadget (reviewed here: http://omniorthogonal.blogspot.com/2010/02/review-you-are-no... ). They both have a point; systems which reduce human relations to very simpleminded database formalisms cheapen them.
But they ignore that the human spirit is (or so we should hope) strong enough to survive Facebook if it is strong enough to survive the other insults and depredations it has been subject to throughout history. Facebook may slap a reductive meaning onto the word "friend", but I haven't noticed that truly interfering with real friendship.
Jaron Lanier is a cynical charlatan. It takes a pretty negative worldview to say that the relationships people have on Facebook are the sum total of the nature of human relations, that the entire social phenomenon is a lowest-common denominator operation. The human spirit doesn't have to be strong enough, even without hope. "Facebook killing the human spirit" is an instance of a phenomenon that has never happened.
But they ignore that the human spirit is (or so we should hope) strong enough to survive Facebook if it is strong enough to survive the other insults and depredations it has been subject to throughout history. Facebook may slap a reductive meaning onto the word "friend", but I haven't noticed that truly interfering with real friendship.