I spend quite a bit of time talking about leading-edge Web stuff to mainstream Enterprise types. I have a well-polished explanation for the rise of PHP and Rails and so on: Time To Market. Here’s the sound-bite: “If you and I have the same good idea for a community-based Web site on the same day, and mine is on the air in five months and yours in eight, then you’re dead. And it doesn’t matter if yours is better, because the community has gathered.” Well, Twitter would be the canonical example. They went with Rails because it let them build fast; and they built fast. They suffered terrible pain for months trying to take Rails places it’d never been before; but they fought through it and they’re in a very good place. Smart people tell me that Pownce and Jaiku are slicker and better but who cares? Apparently 140 characters, distributed appropriately, gives you what you need.