I know it's early, but so far the Chrome Web Store confuses me a little bit, in that almost all the ones I tried were nothing more than a bigger shortcut to the regular website/webapp. I feel that anything that's on the web could be in the Web Store with just the right manifest file.
So isn't it like all Cappuccino Apps could be in the Web Store right away? Does the Web Store make them that much different? (I do see that PicsEngine integrates single sign-on with a Google account, but this is relatively minor in my opinion)