"To put a finer point on it: I would just ask, is Facebook the engine of homogenization? Do we live in an era where everyone reads, watches, and listens to the same things? Of course not! We live in the time of the hyperniche. All this liking and information spreading has led us to build more paths that are all less taken. Consider that you could capture a majority of the households in the United States on a given night by advertising on the Big 3 networks. And Facebook is to blame for a culture in which everyone watches the same thing?" Alexis Madrigal at The Atlantic responds to Zadie Smith's article on the vacuousness of Facebook.
Like all technology Facebook morphs itself into different configurations depending on who is looking at it. All I can say is that it's pleasing to use Facebook as a way to keep in touch with people I don't see that often and update myself as to their various comings and goings. That's strengthening my relationships rather than eating away at them.
Where Facebook and other online communication tools have frustrated me is when people on the periphery of my digital circle have misunderstood something I've dashed down and responded with instant bile. Mostly that's because what I've written is unclear, sometimes it's not. But, then, I can hear your response: welcome to the internet!