The fact that they control the stream you see makes it easier for them to reward attention than on Steem. this is the shortfall of Steem that they need readers and only get writers. Synereo pays to be a active reader not just a writer. The downfall could be that it's too complicated. Should be fun to watch and I never would have been interested without my time here in Steem first. I have 150 amp but might buy into the next coin offering.