I made an app for reading Hacker News called HackerNode which makes about $300 a month. http://www.hackerno.de http://www.hackerno.de Do you guys have any ide

I made an app for reading Hacker News called HackerNode which makes about $300 a month. http://www.hackerno.de http://www.hackerno.de Do you guys have any ideas on how I can increase revenues? Thinking of a subscription based model with a lot of killer features but don't know if there is a market for it.