If you wonder how much bjj has grown from 2001 up until today, just take a look at the google results from 2001:
http://www.google.com/search2001/search?q=bjj returns Results 1 - 10 of about 11,300 for bjj. (0.01 seconds)
Compared to now (Oct 2008):
http://www.google.com/search?hl=en&q=bjj which returns Results 1 - 10 of about 3,010,000 for bjj. (0.23 seconds)
That's 11,300 results in 2001 compared to 3,010,000 on 2008. wow!
*btw, if you wonder how we were able to search based on the results from 2001, google just released a 2001 search as part of their 10th aniversary celebration.