Think of an app that has categories just like vine, for example, sports, wildlife, comedy etc. Every week there will be challenges to make user made videos for these categories such as "Kiss the most beautiful girl in the bar". With every contest there will be a small reward given by us like a dog couch, an itunes card etc. I am also planning to include brands to promote themselves by asking user made videos and rewarding the winners. For example a video that has been asked by Prada that awards the winner with a handbag. There is no better way to advertise a brand than letting consumers to interact with them.