Sharing economy: New app to share your food leftovers
28 August 2013 Last updated at 11:02 BST
A new app is aiming to help you make better use of the world's resources by letting you pass on your restaurant "doggy bag" - or uneaten food.
But will anyone want to eat leftovers, or are there limits to the "sharing economy"?
Mariko Oi reports from New York.