All the stuff I'm reading about Google+ is very interesting. Placing people into Circles appears to be an easy way to way to "meter" the flow of information. I don't see how it solves the other problem I've faced with social media: of seeing important posts by acquaintances while not seeing all their posts. It sounds intriguing enough to try.
But I haven't actually used Google+ yet. Why? No invite! Now that I am off Facebook, I'm probably not seeing all the posts by friends asking if I want an invite. The irony, the irony!