Squared Circle Mosaic: Fibonacci Spiral with Hue Twist

Want a poster? We're working on one.

"[Stewart] puts up fibonacci spiral made by auto-pulling images from the
squared-circle group that is mindblowingly cool. Audience groans
ecstatically."

-- Cory Doctorow, describing Stewart Butterfield's presentation at the O'Reilly Emerging Technology Conference (ETECH).

Here are some other group mosaics you will enjoy.