In August 2013 I released a very simple web app called Space Email - where users send out messages and read messages others have sent, totally anonymously. It had too much volume for what was built on a very poorly designed backend, and with no reporting/flagging system it had to be taken down. This past June I re-launched it on a better platform. This time users could pay a dollar or more to sign up for an account where they get a few extra nifty features.

The first week I made $1200, the last month I made around $450. Things have been slowing down with some personal things going on, so it's been mostly passive as of late. When I launched I had some real speed issues and a lot of optimizing to do, which was incredibly nervewracking as it's my first web app built on PHP and the first project I did that uses a database.

edit: forgot the link: http://space.galaxybuster.net/