Read this article and you’ll see why.
And be aware that anything you put on facebook now, including photos of your children or a comment about your boss, has the potential to be shown to the whole wide world. All it takes is the right keywords. You may not mind, but you should know. I have the tightest possible security/privacy settings on everything except my website (links to Companions), and yet when I put up a status with one of the keywords in the title, it linked to a public page. No way to avoid it.
I’m all for something like this. Could some developers please design an open facebook-like thing? I’d ditch the current for that in a second.