Elliot Jay Stocks on the ‘plus’:
Firstly, one of the reasons Plus is so appealing right now is because it’s not populated by the world and his grandmother — remember how much more fun Twitter was in the quieter, earlier years? — and once the unwashed masses step aboard, Plus will surely cave to their more generic needs. In all likelihood, it will become noisey, both in terms of visual clutter and content (see also: Facebook, Twitter, MySpace, etc.).
I honestly doubt it ever gets to that user mass, most people don’t have a need for multiple Facebooks — thus ‘plus’ would need to prove that users would be better off with Google than Facebook, which I don’t see happening. People are just too content with Facebook to move.