Irwin Gotlieb is the CEO of GroupM, a "media investment management" company and subsidiary of WPP, who has publicly opposed Google and eBay's entry into the business at the annual marketing conference of the Television Bureau of Advertising.  (Note the New York-based GroupM, the WPP subsidiary, is a different company from the New Jersey-based media and PR company Group M.)
498 Seventh Avenue,
New York, NY 10018
- David Goetzl, "GroupM's Gotlieb Challenges Web Buying Schemes For Television", Media Daily News, April 13, 2007.