I would like to know how Yahoo's users break down into USA, Europe,
and Rest of the World.  According to SEC filing, Yahoo has 201m users
worldwide in September 2002.  I would like you to read Yahoo's SEC
filings and find out the split between US / Europe / Rest of world. 
You should exclude Japan completely as it is separately accounted for.

I suggest you look at Edgar Online for the SEC filings.

Not a complete accounting, but here's a bit of the Yahoo picture, at
least:

http://news.cnet.com/investor/news/newsitem/0-9900-1028-20236107-0.html
"We have a substantial Web portal with over 30 million users across
Europe," Yahoo Europe managing director Mark Opzoomer told Reuters on
Tuesday.

http://www.ecommercetimes.com/perl/printer/4510/
Overall, traffic in September [2000] averaged 780 million page views
each day, up from 680 million in June. The Japanese portal averaged
112 million page views per day in September, up from 85 million in
June, while Yahoo! Europe's traffic averaged 41 million page views per
day in September.

Thanks, but we do want the most recent, "official" figures from the
SEC filings, which you can get from Edgar Online or finance.yahoo.com

In Yahoo's October 9th 8-K report, they do not break out the users by
region:
http://www.edgar-online.com/bin/edgardoc/finSys_main.asp?dcn=0000912057-02-038468&nad=

"Yahoo!'s global audience, excluding Yahoo! Japan, was approximately
201 million unique users in September 2002 compared to approximately
177 million in September 2001. In addition, approximately 93 million
active registered users, excluding Yahoo! Japan, logged onto Yahoo's
global network during September 2002, compared to approximately 68
million in September 2001. "