Genuine question. I really cannot fathom why that would matter.
"You gave AcmeFamilyPlanner 4/5 stars, Mrs Candidate - say, do you want to have a career or a family?" (Hm, of course this could help remove bad employers from your list of prospective work places ;) )
> "You gave AcmeFamilyPlanner 4/5 stars, Mrs Candidate -
> say, do you want to have a career or a family?"
I am almost certain that questions like this are illegal in any nation a HN reader would want to work in.Just because you can't legally discriminate based on certain things doesn't mean people don't find ways to do so anyway.
No reviews from me.
Edit: Also, "a lot" is a rather unhelpful metric.
That aside, as greyboy already points out, what is going to stop a competitor from creating a fake Google+ account to give that negative review? This move doesn't prevent that hypothetical from happening in any way.
Pretend you're a school teacher with a few malicious students that have access to Google. This exposes to them what you have privately on your phone, so you're no longer going to rate apps in the ecosystem.