An Amazon KDP published indie author would only gain possible exposure through this system, and never direct compensation. That said, as an indie author I like the idea of LendInk and would be happy if people were buying my novel and then sharing it there: it would mean there was interest in the book and it would mean reaching more readers who would potentially seek out more of my novels and become potential future customers. I actively gave away hundreds of digital copies of my novel over a 24 hour period to gain exposure, so I have no beef with a site like LendInk.