Yes, it’s a mouthful, but also an excellent idea, that being:

A directory of Fortune 500 companies that have business blogs, defined as: active public blogs by company employees about the company and/or its products.
According to our research, 40 (8%) of the Fortune 500 are blogging as of 10/05/06

So who are they? I’m gonna cheat and give you a complete list. But remember: this will quickly become out of date, so don’t come visiting in December and complain that I’m missing someone big. Like the quote says, “as of 10/05/06”. To visit the blogs themselves, please go straight to the Fortune 500 Business Blog Wiki – I love you, but not enough to cut and paste all those links!

Advanced Micro Devices, Inc. Inc.
Cisco Systems, Inc.
CSC Team
Cox Communications
Dell, Inc
Eastman Kodak Company
Electronic Data Systems
Ford Motor Company
General Electric Company
General Mills, Inc
General Motors Corporation
Hewlett-Packard Company
Honeywell International
ING Group
Intel Corporation
International Business Machines
McDonald’s Corporation
Microsoft Corporation
Motorola Inc
Nike Inc
Oracle Corporation
Southwest Airlines
Starwood Hotels & Resorts
Sun Microsystems Inc
Texas Instruments
Time Warner Inc
The Boeing Company
The McGraw-Hill Companies
Tribune Company
Viacom International Inc
Wal-Mart Stores, Inc.
Wells Fargo & Company
Whole Foods Market, Inc.
Xerox Corporation
Verizon Communications

(I note with interest that, in the original list on the F500BBWiki, whoever was charged with typing in the list chose to editorialize a little… primarily by indicating that the Motorola Snowboarding Team blog was “lame”)