Depending on your project I'd be wary of "crowd sourcing".
I had a project I worked on for a while. Registered a domain like meetpeople.com, posted the idea for a "community site" project on some freelancer sites, with drawings of the design, the interactions I wanted between users, etc even hired developers to start building it and bought script packages for much of the functionality.
A month later a website like meet.people.com popped up with my exact fucking layout, interactions, etc only the color scheme was different.
It wasn't meetpeople.com but it was similar for a particular niche of people to meet and interact as a community.