Who's Threatening To Steal Ad Agency Business?

Google's efforts to grab a share of the ad agency pie -- online, of course, but also TV ad inventory -- needn't threaten agency giants, according to a report just released by Pivotal Research Group.

A bigger threat to ad agencies: publishers and "IT services firms along the lines of Accenture and IBM, who are building platforms to help execute media campaigns, and to leverage the business and strategic consulting positions they already have with these brands," writes Ingrid Lunden.