I would go further and suggest just having a link to wikipedia or goodreads or some other non-money-generating site and one (always with affiliate tags) to amaz

I would go further and suggest just having a link to wikipedia or goodreads or some other non-money-generating site and one (always with affiliate tags) to amazon. IMO it's not a "bad surprise" to a user that an amazon link is an affiliate one, it's just annoying when the only way you can get information on a book is through affiliate links.