[felipe]

> So you take a picture of each sketch, and upload them to Dropbox

You just created an incentive for programmers to draw useless diagrams on paper and upload them on Dropbox just to "score one point".

Sure, we could go on and on suggesting metrics back and forth to minimize this problem, but my point is that metrics must be carefully chosen due to the unintended side-effects that they may cause. Maybe you can use the number of pictures on Dropbox just to get a sense of overall quality, but if you are going to hold individual people accountable using very exact metrics, then they must be chosen very carefully. This tool certainly does not help on that regard.