Apple, Facebook, Google Aim to Set Mobile Ad Rules

Financial Times: From next week, iPhone users will get the chance to download software from the App Store to block ads from their Safari web browsers. The move comes soon after Google said it would relegate mobile sites in its search rankings if they are too flagrant in pushing advertising for their own apps. The companies that control the main digital platforms are flexing their muscles: advertising is changing, and they aim to set the rules for what comes next.