Originally Posted by MikeOxlittle
This is a pretty interesting situation.
The facts I gathered is that while the site was legal concerning KDP authors who signed up for the 70% plan through KDP, the site culled ALL books from Amazon through an API.
Only problem with that is that some of the books are in Select or the 35% plan and they can opt out of lending, so by culling ALL books, some books that are not set up for lending were listed.
A lot of the sites set those non-lendable books up with an affiliate BUY link, and allow you to wishlist them should they become lendable at some point in the future. I'm not sure how LendInk handled it. Keeping current on lendability status can be a problem for these sites, though, as books/publishers can move in and out of the program.