I keep family names secret because my last name is extremely uncommon, and so it wouldn't be hard for someone to put the two names together and ... well, who knows. For my friends, I'm not as anal because I don't use their last names, so there wouldn't be any reason to think someone could track something embarrassing back to them.

As far as the kids go, I will always use code names. It just lets me feel like I'm protecting them... and along that line, I'll never post pictures of other people's kids. Who knows what whack jobs are out there cruising the Internets, and once you put those pictures up, they're out of your control for good. So, I will never be responsible for something inappropriate happening with a picture of The Niece, The Nephew, Rupert, or any of my friends' children.