> I don't think her statement, that she uses Amazon data to find other books her readers enjoy, is an admission of immoral conduct. She said a quarter of the books she recommends are from information she gained from Amazon.

Visiting the website for myself now: http://www.brainpickings.org/

I think it's clear that she's deliberately and forcefully fishing for clicks on Amazon affiliate link hits. I mean, just take a look at the number of large images (every one of them being affiliate links), one after another, encompassing probably 6-page'fuls at times (and I'm on a 1080p res.). I'm a person who's usually very well aware of what is an affiliate link or not... and yet I found myself strongly wanting to click the images. I don't buy it for a single second that Popova is not exactly aware of what she is doing. Her repeated requests for donations (after every post, in which she stresses that this is a site that doesn't have advertisements) leave no room for doubt -- I strongly believe she is disrespecting the user in a very fundamental way by misleading them like this and playing them on.