EFF: Legal Guide for Bloggers:
The difference between you and the reporter at your local newspaper is that in many cases, you may not have the benefit of training or resources to help you determine whether what you’re doing is legal. And on top of that, sometimes knowing the law doesn’t help – in many cases it was written for traditional journalists, and the courts haven’t yet decided how it applies to bloggers.
This is a simple to read guide to personal publishers’ potential problems– intellectual property, defamation, privacy– as well as legal protections for the individual blogger– safe harbor, reporter’s privilege and access.