Greenpeace is campaigning to get Facebook to use renewable rather than coal-based electricity, and over 500,000 people have signed their petition. Audi has launched a campaign in Ireland involving clues about a stolen Audi car being shared online. A new iPhone app allows users to virtually try on watches from a company without physically handling them. Delta Air Lines is now allowing flights to be booked directly through Facebook using an application, making it the first airline to offer this. Diesel has launched an interactive campaign involving a video of their new runners kicking objects and allowing online users to do the same.