Yea, I got tired of waiting for Heroku and Joyent invitations so I created NodeFu and open sourced it so that others could have fun too! The repo is at http://github.com/chrismatthieu/nodefu
Thanks for this, I couldn't find the link to github easily. Please put it in a slightly more prominent place, so people get what you mean by "open source node hosting platform". Great job!