When you visit the site you get some intro text and a button that says "Ready? Click Here." You will likely get a security prompt as the site connects with your Web cam and then that's it. Your ugly mug appears onscreen and you get a bunch of effects to try using a simple tabbed system.
The effects are nice, but not earth shattering. Applying them is simple and the changes happen in real time. You can move around to see how the effect will look from different angles. Then you click the camera button to take the picture immediately or with a 3 second delay. All this is handled in a way simple enough to pass the "my mom could do it" test.
When you're done, you can save the image or link to it using a URL provided. You can also use it as an instant messaging avatar, email it, or add it to your blog. If you just want to download it you don't have to provide an email address.
It's a shame more Web 2.0 apps aren't this simple.