A lovely bit of data celebration from Ravelry on the occasion of their 4 millionth user.
I’ve said it before and I’ll say it again: if you want to see a successful example of a real social networking site, don’t look at Facebook; look at Ravelry.
A handy tool for getting an overview of your site’s CSS:
CSS Stats provides analytics and visualizations for your stylesheets. This information can be used to improve consistency in your design, track performance of your app, and diagnose complex areas before it snowballs out of control.
Oodles and oodles of data on cities, including gorgeous animations of urban growth over time.
I quite like Phil’s idea of having charts like this. It might be a fun project for Homebrew Website Club to do something like this for my site.
A Cederholm-designed site for tracking trends on Wikipedia. Check out the HTML5-based class names.