How easy is it to reshare a "company" post to the wrong people?
Now if you do a corporate G+ post and say "Bob in accounting sucks" and then share that with Bob--that's on you. :)
I don't know why, but psychologically I would feel like this is somehow less private than, say, a mailing list. I'm probably becoming old :)
I think that's a really interesting comment! Perhaps it's because the UX is more social network-y (FB/Twitter), which are historically public, and less email-y+historically private?