I know, I know. I can make all the hyperbolic claims I want, but unless you can get your feet wet, you're not going to sign up. Even if it is free.
To view the demo, simply point your favorite surfin' tool to demo.portfolio5.com. It's all set up for you to push the sand through your toes.
Oh, and you might need this if you want to practice adding your own work.
Now, it's not completely ready to go yet so don't be alarmed if you happen to see something funky. I also can't control the other kids in the sandbox. Consider yourself warned.