Your best bet for survival with this is to connect it to facebook and give your users some sort of points/leveling system to use. That way, there's at least som

Your best bet for survival with this is to connect it to facebook and give your users some sort of points/leveling system to use. That way, there's at least something to earn (even if it doesn't go to anything) and you can rely on the already existing network of facebook to grow the app.