Aetna

Allstate Corporation

AOL

American Home Shield

American International Group

American National Insurance Company

Amgen

Bank of America

Bank of Oklahoma

Baxter

BB&T

Blue Cross Blue Shield of Georgia

Blue Cross Blue Shield of Massachusetts

Blue Cross Blue Shield of Minnesota

Blue Cross Blue Shield of North Carolina

Blue Cross Blue Shield of Rhode Island

Citibank

CompuCredit

Credit Lyonnais

CSC/MemberHealth

Deutsche Telekom

Dresdner Bank

Electric Insurance

Fin-Force

GMAC

Group Health Cooperative

HSBC

HealthNow New York, Inc.

Helphire

HM Insurance Group

HM Revenue & Customs

Huntington Bank

ING Bank

JPMorgan Chase & Co.

MasterCard Worldwide

Mellon Bank

National Australia Bank Limited

NASCO

Nordea

QBE Insurance Group

Rabobank Group

RS Medical

Standard Chartered

TD Bank Financial Group

U.S. Bancorp

ViPS/WebMD

Visa

Vodafone

Willis Group Holdings

WellPoint