Twitter: Technology for Scaling Good - Amy Jo Martin - Harvard Business Review

This might strike some as counterintuitive, that Twitter, that channel for broadcasting narcissistic impulses, for branding and feeling good about yourself, might be the key to a global surge in kindness. In fact, Twitter creates a strange chemistry between the seemingly immiscible elements of self-centeredness and altruism. It turns out that people want to get noticed and they also want to do the right thing and Twitter uses the former to fuel the latter. And it scales. For the first time in history, we can do a lot of good, very fast, at a low cost.