Google is just as bad. Constantly pushing leftist propaganda based on my search history I guess.
Methods to improve the algorithm:
* If you have bought conservative books, do verified reviews of them and give them good scores.
* Hit the “yes” button under 4-5 star reviews for conservative books. This shows you’re interested AND pushes up those reviews when others see the page.
* When it shows you a mix of liberal and conservative books at the top of the page or email, click on multiple conservative books and stay on the page for at least a minute.