Earlier quoted context omitted.
That's interesting. I like Google+, but none of my friends use it. Inviting them to events would be one way of getting them started. Would be even better if I could invite people without Google accounts by e-mail, to make it generally usable for everyone.
> Would be even better if I could invite people without Google accounts by e-mail, to make it generally usable for everyone. You can do this now. Just type in an email address in the field where you add people/circles. The user who receives the invite can set his availability-status without having a + account. Anything else (posting, commenting, adding photos etc.) requires an account though.
For now. Google's patent on "ghost profiles"[1] is probably intended to fix that.
[1]: http://www.google.com/patents/about?id=_FULAgAAEBAJ&dq=s...