Who's on the high horse? I described what I considered to be meaningless interaction, and I know you see the same things. Were not proclaiming that the concept behind Facebook is meaningless, but that the way Facebook conducts itself is immoral.
Without hearing Tims reasoning, I would hazard to guess that its because interaction has been watered down and simplified to a few basic actions, without any real value being introduced. The end result is a never ending cycle of useless information. The kinds of things foreshadowed in Brave New World. I may be embellishing in the predicament, but I think that's essentially the situation were seeing now with Facebook & twitter. No real meaningful discussion (as far as my opinion goes) lives on those platforms.