Well, almost all trade flows into Abqaliyah, and from there out again, so there is a lot of transient population. I haven't significantly fleshed out any of the other points on the map. Most of the other major population centres are going to focus on different things economically. Fishing at the coast, farming (crops or livestock) on the grasslands, forestry near the big forests and mining near the mountains. Those near the ruins also run a secondary trade of exploration, but there's less found as time goes on. Occasionally someone still makes a big find, which could give you a way of explaining where all your sudden wealth came from, if you wanted to set up in Senyeli or Ashiandhi. The flip side of that is word might get back to your former owner and give him a place to start looking for you again .. assuming he survived the arrival of the fair folk :)