A piece in the Wall Street Journal on the complexities when your social network includes co-workers, including your boss. Social network software is more difficult to compartmentalize, I think, than, for example, blogs, since you can make them much more private or anonymous and only share with a few. With something like Facebook, there's just one "you" for everyone to see. Maybe we need multiple boundaries within these identities that grant levels of access, rather than the rather blunt option of simply calling everyone a "friend" (which they clearly aren't).
More confusion over the boundaries between public and private. Find the article here.