My bad, if you're on upwork you clearly know what I'm talking about. You've seen the exploitation first hand. I started on Elance before it merged with upwork. Now is twice the competition that it was before. Don't get me wrong, working online is awesome. Finding work is not. My advice is to never get comfortable working full time for only one client. It's cool especially if you like it, but on the long run your portfolio will suffer and basically you'll have to start from zero.