This is very impressive:
http://ubuntustats.com/.
You can follow in real time a representative chunk of the Ubuntu community activity, all in one web page. You can personalize the way data is shown.
Congratulations to Martin Albisetti and Felipe Lerena :)
Links
http://beuno.com.ar/archives/28
http://ubuntuforums.org/showthread.php?p=2972211
