Long time HN reader, first time poster.

This is my one of my first weekend (it actually took more like a week) side projects.

My aim was to create a tool that I'd find useful while learning something new. In this case, I rediscovered Java, learned about servlets and JSON, and I tried out the Google App Engine as a hosting platform.

Feedback, advice or criticism for an aspiring micropreneur?

I'd be most interested in feedback on the design and execution: what could I do to make this simpler, more intuitive, easier to use?