There was a post about that on HN just a few hours ago. The site was http://www.builditwith.me/ http://www.builditwith.me/ I am myself working on a project cal

There was a post about that on HN just a few hours ago. The site was http://www.builditwith.me/ http://www.builditwith.me/ I am myself working on a project called Startup Garage where people will be able to collaborate on startup ideas and set up "virtual companies". We have a site up and running but the feature set is so far pretty limited as we are still very much in beta. Google us if you're interested. :)