I've been playing with this tool but yet to publish anything with it. I like the way it imports documents and images on to the whiteboard and then you can draw and write around the assets, publish, share and embed. Will test in a blog when I get time.
Wondering if the company is still operating, though. Last tweet was the middle of last month and last forum discussion was some time ago. Also, the how-to video isn't working. The product looks good.
From the site: "Online whiteboard that's free, powerful and easy-to-use. Draw with flexible tools. Collaborate in real-time."