This hack was inspired from our own experiences trying to find people in our class to do homework or study with. Facebook is always a facilitator that helps find people in your class but sometimes you just want to see a visualization of where people in your class are and whether or not they're studying. Our target user would be college students.
Some key feature's we're proud of are the visualization of users on both the mobile app and the website. It clearly shows where people are and the point bounces depending on whether or not the user is working. When the point is clicked, the class the user is studying or doing homework for comes up and then a description of what is being done is also shown.