Nike now lets you personalize your shoes by submitting a word or phrase which they will stitch onto your shoes, under the swoosh. So Jonah Peretti filled out the form and sent them $50 to stitch "sweatshop" onto his shoes.
E-mail correspondence with Nike iD, which cancelled Jonah Peretti's order for personalized Nike shoes customized with the word "sweatshop" under the Nike logo.