Oblige aviation companies to give compensation in Miles to its passengers with delayed flights. Maybe 1.000 miles per hour lost.
Design a coffee table inspired by the twisted legs of a bulldog.
A special check-in on Foursquare for each time we see a homeless person on the street. This way it is easier to take action.
Use the pigeon-tracking to send messages securely to your friends or even between companies. ^_^'
Income generated by "Sponsored Stories" should be shared with the users who were mentioned.
Through a site, teachers create a list of things they need to give a good class. You choose what u can donate and sponsor someone's future.
Prevent social network users to post cat pictures