The Google+ Local has added Zagat to review any local business. With this new Google+ Local, users will require Google Plus account to post any reviews.
Integrated Zagat reviews ( http://googleandyourbusiness.blogspot.com.au/ )
For years, Zagat has provided trustworthy, concise, user-generated reviews, and we are excited to bring these to Google+ Local. We’ve also updated our scoring system to Zagat’s time-tested 30-point scale, so that users can better share their view about what makes a place unique.
Google+ Local Scores Explanation : http://support.google.com/plus/bin/answer.py?hl=en&answer=1723748
When you’re searching for locations in Google+ Local, you may see these scores depicted in two ways:Scores with multiple aspects
These scores will show you several scores for different aspects of the business. For example, restaurants are scored across three areas--food, decor, and service--with food being the primary aspect.
When we don’t have enough user ratings on different aspects, we will just show an overall score. An overall score is comparable to a score in the primary aspect for a location, like food for restaurants.