My former sister-in-law was in a work to welfare program in her area. She was on it for about a year and then was able to get a job. There are plenty of stories like that. I guess it's just that the voices telling those stories aren't as loud as the ones ranting about "welfare queens."
FB is just a microcosm. You can make of it what you want. I'm very careful about who I accept friend requests from and I make sure my privacy settings are locked up pretty tightly. It's been a great way for me to keep in touch with my family and friends - and it's helped me reconnect with some of them - who live all over the country. Plus it's helped me to start promoting my business. I know people who want to bash it, but it's been pretty much all positive for me. If there's any unpleasantness, it's pretty easy to block someone.
My cousin set up her FB with groups and most people are in the "acquaintance" group. Those people see occasional updates about mundane things. Only the "close friends" group sees pics of her kids and more personal stuff.
I play games on there occasionally, but I generally prefer to play them - especially Candy Crush - on my phone. I refuse to send people requests for lives or whatever to play more levels and on the iPhone version, you don't have to do that.