yeah it's hilarious what people's doodles actually end up turning in to. Everything's logged on the server, I'm planning to do a stop-motion style playback video to put up on youtube eventually.
Really glad to see that people are interested in this!
We're actually planning to write up a little blog post about our learning experience with NodeJS etc, maybe open-source the code, and then post that to HN/reddit/etc.
We've actually been waiting for a good opportunity to 'launch' it properly. Just as a fun side-project, no real business in 300lines as it stands, though we'd like to spin off a simple collaborative whiteboard app at some point.
