bill - 4:29 am on Jan 21, 2013 (gmt 0)
Bill, isn't a shortened link treated the same as the expanded one by Google? I didn't understand the randomized bit since the client would have only one Google+ listing.
That wasn't too clear was it?
My very quick idea was about generating a randomized short URL that would redirect to the same listing. So the link from the client page to the target page would be different for every page load. I was thinking that might make the referrer look different to Google if you spread it across different shorteners, but you're probably right that they can see through that. It wouldn't survive a hand-check.