Yahoo Live Visualizations
I recommend going to Vimeo so you can watch these in HD and see more details.
These are two visualizations I did of a few days activity on Yahoo Live, Yahoo’s lifecasting/videochat service. On the first one the horizontal axis represents time, and the vertical axis is number of viewers. It is very information dense, so blow it up to full screen and watch a few times; you may see some interesting patterns. A shout out to Phil Pearson for his help with some of the finishing touches.
Visualization of Yahoo Live! (no. 1) from Nikhil B on Vimeo.
This one is a collage showing all the simultaneous channels at once. If you watch carefully you can notice that there are fewer broadcasts at night and more in the morning. You might also catch a glimpse of morning light and evening darkness.