I came out first to all of my closest friends, then to my mom, stepdad, and siblings on mom's side. My dad and stepmom have always been Luddites, so it was then that I came out on Facebook, thinking I'd come out to my disconnected parents when the time was right (relations between us have been strained for years since they had practically disowned me because of my divorce and politics). The only people from my dad's side who were on my Facebook were a stepsister who I knew wouldn't tell, and my half-sister who has schizophrenia and was disowned years ago because of her condition.
But you know what I learned after coming out on Facebook? My stepmom had a Facebook page and somehow found out my news. If it's any indication of how they already felt about me, I noticed that she had the page for nearly a year, had all of my sisters on her friends list, my grandpa, about 5 other family members, my ex... but never bothered to add me. In fact, nobody from that family has ever bothered to add me, save the two sisters I mentioned above.
My ex called me last week to tell me that the reason my dad and stepmom hadn't picked up the phone or returned my calls for the last two months was because they found out I was transsexual. Yes, when they found out, they called my ex, not me. Another indication of how they felt about me was that they'd rather believe the rumor mill and people with half-information than find from the source (when I'm the source, that is). So now those relationships are over forever.
Not that I needed them. They beat me so badly growing up that I often wonder if my lifelong depression was the result of the copious number of head injuries I sustained before I was even 10. They abused me physically, mentally, emotionally, spiritually, everything but sexual (thank the gods). So maybe this whole Facebook thing was the best way? I don't know...
Just saying, consider it fully.