==== NOTICE ==== This project is very old and no longer works as intended. It was built to use a hidden feature in Scratch 1.4 called "mesh", which allowed two computers to link together over the internet and play a single project together. However, this feature was removed in Scratch 2.0. You can still use it as a single-player paint program, though, so I figure I might as well leave it up.
I'm a little late to jump on the mesh bandwagon, but oh well. This project allows 2 people on different computers to communicate by drawing things on the screen. Kind of like Pictochat on the Nintendo DS. If you're wondering what mesh is, look at this topic: http://scratch.mit.edu/forums/viewtopic.php?id=32046 Basically, it's a hidden feature in Scratch 1.4 that allows 2 or more computers on the same network to interact with the same project! Click that link for more details. This project is like a live paint program. Whatever you draw on the board shows up on the other person's screen, and vice versa. You can draw with 9 colors (+ eraser), and 5 pen sizes. To clear the board, both people have to approve it. When you click the "Clear" button, it'll send a notice to the other person asking if they want the board to be cleared. If they say yes, it'll wipe everything clean. Naturally, because of the lag in mesh, when you draw something it might look just slightly more jagged for the other person. It's usually not noticeable, but if everything needs to be pixel-perfect for some reason, draw it slowly and it'll work. Have fun!
