If you know about Twitter already, skip to the next graph. If you don't, take this on faith: Twitter's a website that lets an infinite number of people make really small contributions to a never-ending stream of content. And that's the best way I can describe it today.
Check out this story being written on Twitter by — so it says — middle schoolers. Latest addition, as of 12:43 Eastern:
I see a light turn on in a window. My eyes lock with a young woman holding a baby. She screams and I start to run.
Bonus: BPP Twitters.