you dont actually have to delete your FB to burn them on their revenue
they get paid by daily active daily user counts - not total accounts. Advertisers dont care how many people registered and never came back. they want to know how many eyes they can hit on an actual day.
so all you have to do is not login and they lose $. delete the app on your phone, or just turn off notifications, and dont use your account. if you dont login you dont count on the active daily users #'s.