Microtasking is a great management method, provided you can break your larger scope into smaller micro-tasks. Who should do this decomposition and how much time will work by itself will take? This question I hear very often when we start talking about paying-by-results and microtasking. We've spent a few years to find the answer and the methodology invented was called Puzzle Driven Development, here is how it works (the full video is there): https://www.youtube.com/watch?v=LmSaC_OjIbQ