Optimism about new media tech doesn't survive long when average humans get their hands on it. It's all fun when it's computer enthusiasts only, but when FB or Twitter makes it so even the least considerate, most highly misinformed, and most toxic individuals can reach hundreds of others...that's the other tail of the distribution, that's the snake oil salesmen, conspiracists, religious fanatics, assholes, jerks, and all the people we used to go online to avoid.