1. I reviewed every positive survey we received back over the last 6 months and sent an email to every one of those customers saying that if they provide a review, we will give them a free oil change. I did not ask for a good review, but I did only send it to satisfied customers. This worked well to get us jump started.
Clay,
I would be hesitant to recommend this as a review gathering technique......sure you didn't require the review to be good to receive an oil change, however the perception of the people you "pay" for reviews is that everyone gets paid for reviews. This makes these same customers give your reviews no thought when purchasing their next vehicle or service or referring friends or family.
Just my opinion, but I think spending the extra time instead of paying customers is the way to go. Spiff your salespeople or service writers based on the most reviews for a set time span and you will get the same results without watering down the effect of your reviews.