Gathering feedback from Facebook groups and through Facebook ads, compensating readers for your book purchase, and, hopefully, converting that into Amazon reviews is a good strategy.
But even the previous sentence sounds a bit complicated. Not to mention actually building a system for corresponding with potential readers, tracking who is at what stage, and tracking compensation (both to prove to Amazon that the reader received only compensation and not a reward, and for tax accounting purposes).
What are your thoughts on the topic? Do you use such a system? If yes, how do you organize it?