The deal in question came after Facebook users sued the company for publicizing their online purchases without permission. The social-networking site agreed it was in the wrong, but the settlement that the U.S. Court of Appeals for the Ninth Circuit approved did not compensate the more than three million absent class members, the petition argues.

Instead, the settlement paid their lawyers $2.3 million, and gave $6.5 million to a new foundation that Facebook helps run.