That's clever wording: That helps support Brain Pickings by offsetting a fraction of what it takes to maintain the site[...] It implies that only a small

That's clever wording: That helps support Brain Pickings by offsetting a fraction of what it takes to maintain the site[...] It implies that only a small amount of the costs to maintain the site are paid for by affiliate link earnings, but technically something like 200/1 is also a "fraction".