>him not really knowing facebook from the perspective of a consumer/user and only knowing it primarily as a broadcast tool

That's funny, because as a "regular user" he perfectly voiced my opinion of (what I now know to be called) edgerank. I see and feel the facebook filterbubble quite frequently, its much easier to notice and more annoying than google's. I just don't voice my distaste for it very much because people just write off my opinion as being a "hater".