Startup Idea : Student activities sharing

You are in a college with tens of thousands of people, and why do you ever do anything alone if you don't want to? I want to make aan app that enables students to post/view activities, filtered by school name, so that other students can join you if they are interested. It could be a study group for finals, or a help request for moving, or car sharing request or even a LAN party for your favorite games. Share you needs and interests, and provide your resources. In return you will gain friends, resources, and network opportunities.