This reminded me of something a friend wrote last summer:
Facebook connected me to current friends, old friends, old non-friends, current non-friends, concert venues, my library, and dozens of other people. But these were, as Umair Haque phrased it so well, “weak, artificial connections, what I call thin relationships.” Following all these people takes time and attention, but I have as much connection with a person who used to share deep conversation with me as I do with someone who was a passing acquaintance: not only thin, but impersonally thin.