Yeah don't put over personal info on it so there isn't anything to be worried about.
Mine's private and I like it. At first, it's a hassle to email everyone an invitation to your blog, but I just felt better about it. We were getting some creepy guy leaving comments on our blog so immediately after that, I went private. I just like it; it makes me feel like no creepos are looking at our pics.
What have you got to hide? "G" gets a little crazy about stuff I put on ours, which is why you won't see our actual names (as if you couldn't figure it out eventually). But if you don't want to go through the trouble of editing out information, go private.
Don't. I love reading about you and John. Or if you do, add me as a follower.