At this point you're operating a propietary software company that offers a "contribute and get the software for free" perk. You need to manage access to your c

At this point you're operating a propietary software company that offers a "contribute and get the software for free" perk. You need to manage access to your closed source code and decide what is a viable contribution, etc. Sounds to me like this would have the potential to be a PR and legal nightmare.