I agree. And the fridge acquisition shows that they're not done implementing new ways to share yet. I think the trick will be to make it all easy to understand.

I agree. And the fridge acquisition shows that they're not done implementing new ways to share yet. I think the trick will be to make it all easy to understand. I think another non-trivial difference is that there no ads, at least not yet. Even if they add gmail-style ads, it'll be a lot better than FB. But more importantly, Google doesn't necessarily need to make money on Google+. They just need it to help make search better, so they can continue to make money on search ads, which is their real bread and butter.