^ i used to have roommates who did this often. and the FnB here has some damn good cooks.
i personally don't dumpster for food, but i sure take advantage of dumpstering items such as furniture and clothing that isn't ruined! i found one of my favorite coats in a thrift store dumpster once
having worked in food industry for 7 or so years i will say it's rediculous how much gets thrown out. oftentimes the stuff they get rid of isn't even bad! and then you think of parts of the world where food in such masses is unheard of and the conditions of people there. it gets depressing.