We worked with CBSSports.com to create a custom whiteboard for drawing football plays. Check it out on their website. This was a great opportunity for us to leverage our technology for a partner’s specific needs. Between the service on our website, our developer API, and such custom solutions, we hope to address everyone’s need for a better whiteboard and enhance everyone’s ability to visualize and communicate.
Update: The service ended with the football season, but here’s a screenshot of what it was:
Dabbleboard - The official blog 
December 17, 2008 at 4:35 am
That is a *fantastic* idea for advertising use of Dabbleboard. I can imagine hundreds of such applications. Between that and a Pro version, you could build quite a business here.