Beyond open source: real-time code fragment sharing and dev among flash mobs.

You can watch as people make copies of your code while you are typing it in real-time. And you can even see what modifications they make, what happens when they run it, etc.

And you can of course copy back anything you like from their code as they are typing it in real-time, and so on.

Such a system might encourage programmers to make at least small fragments of their code available in real-time because it would encourage collaborative development and debugging via flash mobs.