Publishers brace for a potential Facebook traffic crash after Australia ban

Hi and welcome to Insider Advertising for February 19. I'm senior advertising reporter Lauren Johnson, and here's what's going on:Publishers react to Facebook news block.WarnerMedia axes agencies."Reply All" backlash.If this email was forwarded to you, sign up here for your daily insider's guide to advertising and media.Tips, comments, suggestions? Drop me a line at LJohnson@businessinsider.com or on Twitter at @LaurenJohnson.Nick Wass/Associated PressFacebook's news ban has crushed traffic for