Got onto Google+ yesterday and played around for a day. Looks interesting but lacks the wow factor. Liked hangout and spark. Circles look nice. I think the success will depend on how quickly the restricted access opens up. Because for most part of yesterday I was hanging out alone yesterday. I had to invite 15-20 friends to make things a bit more meaningful.
Google+ still needs to go a long way if it wants to really fight facebook. Some initial enthusiasm from people should not be mistaken as product success because it is largely due to fatigue of facebook.