On your main page, you cordon off the “Boing Boing Store” posts in warning boxes, which is great, but underneath an article, where there is a list of next articles you might want to read, no such distinction is made:
(This is especially difficult because @frauenfelder works tirelessly to write reviews with affiliate links, which is fine and sometimes useful and entirely his prerogative, but it does make distinguishing between the two even more difficult.)
@jlw ?
Edit: BBS crops the image without showing there is more to it, which is a bit odd @codinghorror. In any case, if you click on it all the sponsored posts are towards the bottom.