This is pretty awesome-looking. I was thinking today about how to create a dashboard to which I could send data and easily add new widgets on it: graphs or lists or urgent notices.
The examples for sending from django, python, rails, etc are really neat! I wouldn't have thought of directly sending querysets, but the simple example made it seem obvious.
I hope you find the right paying niche for it. I personally wouldn't pay $20/month for it unless I had an active startup project. For me, a couple dollars a month maybe since my use would be pretty limited and occasional.
