I'm guessin you didn't check that out. Fail blog post. Has nothing to do with programmers at facebook. It says at the top "(not affiliated with Facebook)". It was done by some 3rd party. You can use it with the Better Facebook addon. FB already has groups or "circles" and you can choose who you share your posts with. Most people probably find it hard to use because they've got 500 friends to go through that they've randomly added over time. Of course it's easy in google+ when you just signed up and only have 5 friends. Also assuming the million people already signed up at google+ didn't care about the message you see when signing up that said google can not protect your privacy. It's completely up to you right now protect it. People jump on the bandwagon all the time without knowing any details about what they're doing. I don't check my FB very often myself. I find it annoying people believe that everyone cares what they're doing every minute of the day.
I believe its more of a case of ppl portraying a persona that they would like the world to see them as...whether its a personal profile or a business one it all boils down to being a type of promotion.people believe that everyone cares what they're doing every minute of the day..