I don't open my facebook page automatically as I turn on my computer. Priority is checking emails. But if I get a message from facebook that someone messaged or commented there, I sign in to respond. Recently that's getting more frequent, and I comment on other people's stuff. My youtube posts automatically on facebook.
Facebook is like a cross between email and blogging. I like it much better than twitter. My blog posts automatically go up on twitter, but I don't actively twitter. On occasion I chat on email or facebook.
Last night my father asked some very intelligent questions about what we do on the computer, since he sees both me and my husband tapping away on the keys
PS I'm very easy to find on facebook. Just search my name. I think I put the links to my account on my blogs' sidebars, too.