Agencies warn against advertising on some of Facebook's products, but nobody's listening By: CNBC.com News March 07, 2018 at 11:24 AM EST Advertisers want to know where their ads are running on Facebook, and the company has yet to widely provide solutions. Read More >> Related Stocks: Coca-Cola Company Facebook Interpublic GroupCompanies Paypal Holdings Publicis Groupe S.A. ADR