In parts of the developing world, Facebook is used sort of like Craigslist to connect buyers and sellers, with the prospective client's friends list acting as a

In parts of the developing world, Facebook is used sort of like Craigslist to connect buyers and sellers, with the prospective client's friends list acting as a reputation system. Instead of this person to person bartering system, the developed world relies on advertisements and influencers for commerce. There's a Bloomberg article that goes deeper into this but I can't find it right now.