iWallFlower is a free download that lets you draw on the iPhone screen and then share your creations with the rest of the world. There’s a bit of “Ocarina” about it, except that you’re showing off visual creations instead of sounds.
You can just watch what others are creating, either from a desktop web browser or from within the iPhone app itself. There’s a voting element, too, as you can mark artwork up or down. Popular artwork appears in the “promoted” or “popular’ sections. The app also displays a map showing where each drawing came from.
I’m not a visual artist, so I doubt my creations are ever going to make it into the popular sections. The app feels a little quirky, but maybe I just haven’t fully “got” it yet.
iWallFlower [iTunes link]