What do they do?
Ditto makes it really easy to let someone else have the stuff you don't use from around the house, and to find free stuff near you on a map.
How are they social?
Ditto reduces consumption of new products and keeps old ones out of landfill.
|Social benefit:||Waste reduction|
FoodLovers is a site where food lovers and FoodLovers approved businesses meet, exchange information, knowledge and products.
Hollaback provides an online forum that lets women share their stories of street harassment in cities across the world. Shared content includes blog posts and photographs (with optional geocoding.)