I agree, but it’s a bit like Twitter in this aspect. I have people follow me and it doesn’t really matter too much in my opinion. I don’t see them in my stream so it really does not affect the way I share things.

I’ve discovered this too. A lot of random spam pages are adding me to their circles and there’s nothing I can do to stop them. It’s very disconcerting. I’ve messaged the people and asked them to remove me from their circle but that hasn’t worked.
I’ve reported it using the feedback button, I suggest you do the same. There needs to be an option to opt out of being added to a circle or some sort of add request.

One of the best things of something like this, to me, is the happy buzz we all have in the beginning. Look, washes even whiter this time! 🙂

I hear you, Nicky; the invite-only trick is getting boring. Effective — but boring.