Maybe it doesn't fit into stackexchange's policy, so maybe someone could just make their own website to support this instead? Where we have normal people saying 'make me a program!' and beginner/amateur programmers who want to improve their coding skills make programs. All programs on those site should be open source, free, and maybe GNU/creative commons license?
Also, there should be security measures like peer-review, voting, comments and automated macros/scanners to make sure no malicious programs enter the site.