My mother is the type who spent most of my life saving up details that she could twist and use against me in arguments later, sometimes years after the fact. She's gotten better recently, and we are Facebook friends. However, I don't post anything intensely personal on Facebook. I use Facebook a lot to connect with people I work with, since they're all over the state. I post things about my life, but only things that are work-appropriate and that I wouldn't mind sharing with people I don't know well. If I posted more personal things, I wouldn't make them visible to my mother. There is a way you can create filters on Facebook, so you can post things so they're visible to only the people you've added to that filter. That can be really useful if you decide to friend your mother but don't want her to see certain things you post.