Non-Blogger Fired For Blogging!: Anil Dash nails it here when he explains that “no has ever gotten fired for blogging.”
Take a person’s words, and guess what would happen if you took the exact same words or ideas and sent them to the public via letter to the editor, streetcorner soapbox, or pony express. Would they still get you canned? Then you weren’t fired for blogging. I haven’t seen a convincing example of a situation where this wasn’t true yet. And believe me, in my line of work, I hear about every person that gets “fired for blogging”.
Some people got fired because they said things they shouldn’t in a public forum, it just happened to be on a blog. They would have been fired just the same (and probably faster) if they said those things in a CNN interview.