Newspaper groups' decision to quit ABC has agencies all atwitter

It's hard to see what substantive difference there will be for advertisers and agencies with the decision of the Star Media Group, Transcontinental Media and Sun Media pulling their daily newspapers out of the Audit Bureau of Circulations (ABC).Their 30 titles' circulation will, after all, be measured now by the Canadian Circulation Audit Board (CCAB), a division of BPA Worldwide, a company that