Ok. Here's something:
The Association of Talent Agents -
www.agentassociation.com
has a search of agencies and lists Amanda's as Creative Artists Agency or CAA. Their address is
2000 Avenue of the Stars
Los Angeles, CA 90067
tel: 424.288.2000
fax: 424.288.2900
www.caa.com
We could try to contact them and let them know there is an interest in an "official website", since they don't seem to think of it themselves. Maybe if enough of us contact them, they will actually get one going.