This is cool.

Are you caching the data? It would be cool to see a graphical interface of this over time. The guys at insidefacebook have done a nice iteration of this idea on the analytics of facebook apps and pages (http://pagedata.appdata.com)

It would also be cool if you could somehow integrate Compete and Quantcast into here too (not that any of those three are terribly accurate - but would be fun to look at).