Simply put, we write about Twitter so often because right now, it matters. From news organizations to movie stars, from earthquakes to fires, from Facebook to Google — everyone seems to be talking about, to or with Twitter. In an era of mass communication, it is the latest medium. And it’s fundamentally changing the ways in which people interact with others using the web. What you may view as a stupidly simple service with no real point, I view as one of the few inspirational products in bleak times.