I’ve been using Google+ a lot over the past few days, and still don’t know quite where I stand.
There are definitely some innovative ideas (HangOuts are great, and Circles work very well for my mixed social networks), but it still feels very haphazard and not terribly cohesive right now – a lot like Wave or Buzz actually.
However, I’m not writing it off by any means – time will tell, particularly when it is open to general access – non-early adopters etc.