Very public health

Jeff Jarvis on the trend toward being less secretive in public about our personal health: "Rather than reflexively declaring that sharing information about ourselves -- our bodies as well as our thoughts and actions -- is dangerous, we must stand back and ask what benefit could come from such data..."

Awareness is key to making good decisions about privacy. It's a bad thing when a social network promises privacy, then bamboozles us into revealing ourselves. But it's a good thing when we choose to reveal something about ourselves, fully aware of what that means, because it helps other people.