the individual components of what you're talking about basically exist: http://refactormycode.com/ http://refactormycode.com/ - comments on people's code, disc

the individual components of what you're talking about basically exist: http://refactormycode.com/ http://refactormycode.com/ - comments on people's code, discussions about refactoring http://rosettacode.org/ http://rosettacode.org/ - common pieces of code implemented in different languages