I don't know how it was implemented, but there was a similar free food blitz[1] list at Dartmouth in my day. I swear, just catering the campus-funded student organizations' events must have floated half the restaurants in town. Most days, you could eat like a hobbit.
[1] Dartmouth is a weird place and for the longest time ran a unique homegrown emailish/im protocol called BlitzMail, with an entire vocabulary and culture associated with it.