Privacy and weblogs and the blogger’s voice

The topic of privacy and what you do and don’t write on your blog–both your personal blog and a workplace blog–interests me as a question of privacy, but also of voice, of how bloggers present themselves.
After all, blogs are personas. We emphasize particular aspects of ourselves, allow things we want to share to be revealed, and try to obscure those we consider private, want to hide, or are not aware of.
Reading Cadence 90: “What happened when your family found out about your weblog? and Halley’s Comment: Family stories–what I share and what I don’t highlights those questions of voice and persona.
Who are you , how do you present yourself is an essential question for all writers, and it seems equally relevant to bloggers.