Fancy some interactive, online drawing fun? Swarmsketch is a project of Australian university student Peter Edmunds. A random popular search term is selected as the topic of the drawing, which runs for a week or 1000 lines. You can add to the drawing, or view previous drawings and watch animations of their development.
Similar interactive drawing and design projects include the Scratchpad and Graffiti Playdo. Sometimes fun, but when I tried to play on Graffiti, somebody kept scribbling over everything I did. Why is there always some dimwit who can't play nice?