I am really finding out some cool handy tools that work with the Nokia N70, and other camera phones too, and just posted a blurb on Geek.com that shows how you can take a pretty poor photo of a whiteboard with the N70 and get a pretty dang good PDF document emailed back to you. The service also lets you take photos of documents and get PDFs back. Check out my scanR.com blurb and give the service a try yourself.
We use the whiteboard with dry erase markers quite a bit here at work and this is a very cool way to get a document back that can be archived and used later by the team.