I have since left the dealer group I was a DMM for but I learned a few things about reviews while I was there. Fake reviews will always be a problem, but they were manageable for me when I followed these steps.
1. Stay on top of your own reviews. If you receive a review which looks fake, it is YOUR job to get it removed even if it is positive. If you can find out who left the review for you if it was one of your own people, reprimand or termination is a given.
2. The best way to get reviews is to make it as easy as possible for your customers to leave them. Cars.com and Edmunds do not track IP addresses, so it is very easy to hand the customer an iPad or walk him/her over to a computer for them to leave a review. Coach them, walk them through it, but DO NOT put words in their mouths.
3. Take away cards are great, unforgettable customer service is better.
4. Respond to ALL reviews, positive or negative.
5. Give your team instructions to solicit certain sites. The key is to always have current reviews on the main review sites; yelp, cars.com, google +, edmunds.com, dealer rater, etc. I was initiating targets weekly to always show new reviews. BTW, solicitation works like this:
"Hello Customer, do you by any chance have a Yelp or Google+ account? A Yelp then? Well, it would really help me out if you could just write a few words on a Yelp review after you leave today. It would really help me look good to my boss."
6. Bad reviews are not all that bad! If you get a bad review, a customer is letting you know about a problem in your business. It is your job to assess and fix that problem, and make sure it doesn't happen again. This is 85% of the time, the other 15% being people who just want to complain. Keep your responses short and sweet, do not engage. Apologize, advise them to call you or come back to the dealership to talk in person, and sign off. DO NOT get into a heated public exchange on the internet. "The internet is written in Ink..."
Just some fun facts I thought I would share about my experiences. Please let me know if you disagree, have more to offer, or even took a different approach to getting more reviews and dealing with negative/fake ones.