"I'll discount the price if you'll leave a review online about your experience with our company."
I only heard "discount" and did so, speaking honestly and directly about the work they did. Which was, in fact, good. I've done that like... twice... in my lifetime.
To my surprise, I received an email a couple months later that said my review had been seen over 500 times. I doubt all 500 clickers had become customers, but now I understood why an honest (positive) assessment was worth money to both the owner and me.
It's wrong to puff up a review. Even worse to retaliate or be vindictive with a negative review. But an honest word without spin is hard to come by these days... and speaking the truth IS a way to love one another. So let your "yes" be "yes," and your "no" be "no," and "speak the truth in love." Sound advice in every age. Take that to the bank.