Actually... I don't think Bok is doing it the way I did... I wouldn't recommend it... I did those by the "hard way"...

That time on the contest I picked the info on every single Workunit that you guys crunched (reading and parsing every WU info you guys had on your task history, it was quite a few hundred hits on the server each day), that's how I managed to break it down by apps and give all that info.

I did it because it was fun and doable for a small number of people but I don't think such a feat can be done on project wide level, unless the project admin produces xml batch stats for it.