I'm working on it, actually... haven't had the time to really add to it though, so I guess I may as well post the link so other people can
http://ayumihamasaki.wikia.com
Feel free to add things to it, everyone, but PLEASE include citations and verifiable facts, no conjecture or opinion. I really don't have time to do too much quality control >_< Also please keep up quality standards. Copy & paste the structure of a page that's already done and fill in the blanks, don't copy & paste data from another site.