It’s called Vimagi. It’s a way to share drawings with friends. You paint something, using his app, then show it off to people. They can watch a replay of your painting, comment, and rate your work.
Interesting to note that he’s also using some Flash and AJAX, proving ErlyWeb compatible with those technologies.
Check it out – you may even find my own [poor] artwork there, if you’re clever. 😉