Imagine a dozen or so people all standing in front of a huge chalkboard. When the whistle blows, everyone has five minutes to sketch their hearts out. You doodle, the gal next to you doodles, and then someone reaches over and doodles on your doodle. Such is the concept of Multiuser Sketchpad. I'm still trying to figure out if there's any sort of code of conduct, but so far it seems like the wild, wild west of scribbling.

Go ahead and give it a try. I dare you.