Show HN: A virtual whiteboard for working or teaching remotely
This is little 'scratch-your-own-itch' project I started working on about 9 months ago.  Front end is GWT, back end is Java servlets.  Database was originally MySQL but switched to Prevayler for performance reasons.My YouTube video gives a nice overview of the benefits of a virtual whiteboard:
http://youtu.be/MDEHFHG1l3YWhat does Hacker News think?