After looking carefully at all the other ideas posted here, I decided to create a new idea. It's a social app in the shape of a memory game, where people can collaborate with the campaign against overfishing ran by WWF by buying the app for iPhone or iPad. Buying and playing the app the players get snippets of information by the end of each match and can share that important data via Facebook or Twitter with their friends. The more they share, the more points they get and can run for a prize at the end of the year.
Please read the next slides!