This is very cool! As a piece of constructive feedback, consider waiting until a visualization is scrolled into view to start animation. I'm particularly think

This is very cool! As a piece of constructive feedback, consider waiting until a visualization is scrolled into view to start animation. I'm particularly thinking of the Exponentiation page. Mike Bostock wrote about this recently: http://bost.ocks.org/mike/scroll/#4 http://bost.ocks.org/mike/scroll/#4