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.<p>My YouTube video gives a nice overview of the benefits of a virtual whiteboard:
<a href="http://youtu.be/MDEHFHG1l3Y" rel="nofollow">http://youtu.be/MDEHFHG1l3Y</a><p>What does Hacker News think?