I think i really simple solution to this problem is for g+ to have default circle called following(forget if it was there when i joined) and anyone you add DOESN'T get a notification. To me following inherently means we aren’t friends and they probably wont want to add me. But I also agree with +Tory Briggs
, this is a feature, not a bug.
G+ is better than facebook so I'm here for a while. Circles are great, and i love the ability to edit my comments after i have posed them.