It is always odd to me how little people pay attention to blog posts past the initial headline and first paragraph or two. I have seen about a dozen variation of “Amazon is Testing Kindle Book Rentals” over the past couple days. They all link back to this post, which does show a kindle book rental.
The problem is that the book has an odd title Theories of International Politics and Zombies. It is published by Princeton University Press and is actually a political science book. Amazon has been renting textbooks, including kindle format text book rentals for a couple years.
In the comments of this original post, one of the commenters notes that this is actually a text book, that most of the questions that were asked were either on the page (yes you can upgrade the rental to a purchase later) or were on the Textbook Rental FAQ page.
Anyone can make a mistake. I make them all the time and I try to correct them. But all of the blog posts that I actually have read about this, were written (or at least posted) after the comments pointing out that this is not a new Amazon Kindle Book Rental program and it is not in a testing phase. But the re-posters did not seem to get down that far.