For a long time, I’ve had some doctor friends complaining to me that once Google Places changed over to the new Google+ format, all their patients lost the ability to leave anonymous reviews (thus hurting their business and their rankings).
They asked me what to do; and I, in turn, asked my fellow SEO friends what to do.
No one really had a good answer, except to start leaving reviews on doctor-specific sites like healthgrades.com and vitals.com. That never seemed like a good answer to me, so I kept searching. Even answers from Google staff (in Google Groups) don’t shed much light on the situation:
Read more: http://searchengineland.com/how-to-leave-anonymous-business-reviews-in-google-174532