I'm not sure how folks who think that FB is so bad are differentiating it from any other online forum? You're all a member of at least ONE! Posting daily activities, pics, opinions and other personal interactions. So one's called Facebook, the other is called "XYZ"forums. Some forums require an admin to approve membership, but that's simple and then all of this is public info.
I enjoy re-connecting with a few dozen of my old AF friends after 20 some years. I enjoy seeing frequent pics of my nephews that are in CA. I enjoy getting updates from my cousins who's lives are too busy to call that frequently.
Do I block folks or "ignore" them? Yes a few are too annoying to deal with, but most of the time, I just read their drivel and move to the next post that is probably more interesting. Might even be something I want to see. Like Brian Klock's new project, or HogProWheels recent install. Or maybe one of my co-workers needs to know if they can get sushi at the airport?
Sound familiar? Seems like a glass house and stone scenario to me.
It all goes back to the person posting and the person interpretting the post. Facebook, CVOHarley, HDForums, HTT, ... Pick your poison, they're all the same fundamentally.