Yeah, most people I've talked to only do this part time. After my first 10k, I scaled quite a bit so I wouldn't have to commit more than a couple hours each week to the work.
What excites me, though, is that you can get paid to learn & improve with real time market feedback (and a minimal time investment) and you can then take that experience on to bigger & better things.
RE: How to Learn or Improve Skills with Micro Jobs