An article posted by CNET about 15 hours ago quotes Roger McNamee saying that G+ is doomed. This is the same guy who is an investor in Facebook and said in 2009 people would quit using the I phone. It’s obvious McNamee does not have a clue on what he is talking about. Not only is G+ not yet available to the general public yet, recent posted growth revenue shows that G+ is out pacing Facebook just based on being in a trial stage.
It’s obvious that the long term benefits and usage of G+ will be determined by the people who use it and Googles ability to respond to change request, it’s way to early to predict any outcome.