[uast23]

>Google, being late to the party

This is biggest advantage I guess. Seeing both the models (Facebook and Twitter) working, Google+ tries to bring the best of both, wherein when I add someone to a circle, it's like following him rather than adding him as a friend, which is more like Twitter; but with it's rich media interface, the stream looks as good as Facebook. And not to mention the granularity of user control over what to share with whom, which again is a better version of what we have on Facebook. So it's more like the best of both worlds where you don't necessarily have to be friends with someone to broadcast and if you are friends, then well, you are friends.