Sure. Instead of servers, you have friends, and you subscribe to your friends content, and discovery occurs through friend-of-a-friend network and "discovery h

Sure. Instead of servers, you have friends, and you subscribe to your friends content, and discovery occurs through friend-of-a-friend network and "discovery hubs" like the old Yahoo, but for niches (i.e. Follow TechDude96 for hardware review aggregation, etc).