My journal is a mix of nattering, politics, language, and miscellany. I have one major ground rule: Try to be respectful. I see a personal blog (like a LiveJournal) as an invitation into someone's emotional house. Take that as you will.
If you add me, I'll generally add you back. I'm passive like that: I used to add other people regularly, but not anymore. So if I seem interesting, feel free to add me; don't wait for me to make the first move.