(keitai-l) questions about mobile commerce in japan

Dear list,

I am looking for some numbers and reports and resources on 
mobile commerce in Japan. For example: what kind of 
internet/mail services people like to use on their keitai 
(i-mode, j-phone, cdmaone...) and what kind of people 
especially use mobile phones in Japan.

Young/older people? Girls, boys? Students, professionals? 
[...]

Also, is there any list of most popular sites/services at the 
different phone platforms? How many people already shop on 
their phone and if they shop, what do they buy? 

And for what type of service people use their phones the most? 
Calling? E-Mail? Web? Chat? How many are people willing to 
pay for information and/or services on their phones?

Any hints and resources would be greatly appreciated!

TIA,
Andrea Hoffmann
--
Andrea Hoffmann -  Webmaster - andrea@girigiri.co.jp 
Party & Event Manager:    http://www.machiawase.com/
i-mode:       http://www.machiawase.com/i/index.html
CdmaOne:   http://www.machiawase.com/hdml/index.hdml