Facebook worries me.

This article let’s me know I’m not the only one concerned at the dominance of companies like Google and Facebook. I don’t have enough data or information to judge whether my continued use of these services are going to be detrimental to me or the rest of humanity. What I do know is that increasingly I’m feeling like Facebook and Google know too much about me and have too much of my attention. I feel a little bit like a puppet, a little bit strung along. How do others here feel?

It reminds me or is analogous to this. In my opinion the food industry having a monopoly on what we eat, just as Google and Facebook will have a monopoly web content. Is this a risk on society?