That's really nice and simple. Love the design! So clean. The use of a pie-chart (or donut chart really) is very nice, but it is a bit difficult to read. I like it better than bar charts from an aesthetic perspective, but I think it is more difficult to get a perspective of scale.
I would recommend finding a way to add % numbers to help people get a better grasp of the results.<p>Also, blue/green and particularly the shades you chose don't work well in your implementation, I don't think. The green doesn't shout Yes, you have to think about it, and blue has never been no. Also I believe blue/green color blindness is the most common, therefore many people wouldn't be able to tell which was which on your chart.<p>Really a great run, just a bit of refinement I think!
Agreed with others - Love the design and it made a great first impression. Your explanation and walk through was very well done as well. I would maybe put a few cues as to which part can be hovered and more information will be presented.
I love the concept, nice execution. What's your launch strategy?<p>HN may be more responsive to a post like "I spent 7 months solving a "small" problem." then link to a blog post with more details about what was broken, how you fixed.