When we realized we were always sending screenshots to each other, we decided that we should make a tool to take, upload screenshots and give us the link. So we made Eopic.
The tool is made with node.js for the server and autoit for the client, and it was very useful to us and many of our friends.
The error we did was to close it (ask for people to register and have a code) which kept people from getting interested.
We may work on a newer, open version later, but in the meantime there's that.