I'm not stealth, but let's just say initially I kind of was. I have two accts. I have just been lazy about the second one and haven't worked on closing it as it is "out of sight out of mind". I am a certified clicker trainer (dog trainer) and have people I know in that context. I haven't told them, but as I said, I'm more lazy. My other acct has a lot of trans people, but it is more because a lot of my current friends are trans. I think if someone were completely stealth they'd need to concerned about FB. I don't think it is safe from a security standpoint. I met someone who is stealth though on FB, I got a message from him something on the order of that I don't want other people posting stuff about trans to my personal acct. Of course, I honor this but since my stuff might appear on his wall I wonder how this works for him.
--Jay