stigma? O freely admit to having a Facebook account. The last thing I posted on it? I birthday wish for my second son. The last update before that? A birthday wish for my first son. Yes, I have an account. Yes, I check it daily. But I do not feel inclined to share every aspect of my daily life "Just woke up, what a great day!" "Just got out of the shower, so clean!" "Finally at work - wow, that moron in the blue SUV.."
All that mundane stuff of everyday life isn't interesting to ME, why the hell should it be interesting to anyone else? And why would anyone think other people would be interested in the mundane aspects of their lives? Yes, I log on to my FB account every day. I also scroll right through 99% of what is posted. The order of operations math problems particularly infuriate me, as it only reinforces how dumb the bulk of the population is, especially when you actually try to explain it and they argue with you about it. So I don't even bother. Sometimes the quizzes, particularly ones about SF or history, look interesting, but usually they are so ridiculously simple that it's obviously been written for the typical reader of Twilight books, not real SF and fantasy. Either way, they always give you the option to post your results to your wall - I ALWAYS say no.
The one thing I do use FB for is to organize get togethers with friends and family. Either through group chat or the event option, makes it easy to let people know and get an idea of how many will show.