Scalzi has some thoughtful criticism of Facebook.
For me, Facebook isn’t bad, it is just boring. For all the things I do online there are experiences and sites which are so much more engaging. Twitter for late breaking tech and sports news and snark around them; sports sites and sports blogs for college football; immersive games for entertainment (have you tried Minecraft? or Steam best sellers?); photography and electronics sites for gear reviews; and so on. Occasionally I get some useful extended family pictures from Facebook but no great pictures. There is just no great reason to go to Facebook that often.
The movie was entertaining though.