Two of the world's largest advertising agencies, France-based Publicis Group and New York-based Omnicom, have announced a merger.<br /><br />It will make them the world's biggest advertising group, worth 26.4 billion euros. Publicis and Omnicom shareholders will each hold about 50 percent of the new company's equity.<br /><br />The tie-up could put pressure on rivals to do similar deals to keep pace. <br /><br />...<br />http://www.euronews.net/