Yes but there's no reason it couldn't, I believe was somebody's point. Twitter doesn't do anything that's not possible by other means. Following is conceptually

Yes but there's no reason it couldn't, I believe was somebody's point. Twitter doesn't do anything that's not possible by other means. Following is conceptually the same as subscribing. Sharing or retweeting is the same as forwarding. You're only describing differences in usage patterns, and network effects from popularity of the network. Not discounting those at all, just noticing nothing unique has been demonstrated.