A major mobile carrier in the Middle East is giving subscribers free data. Their challenge is to provide maximally relevant in-browser advertising to subscribers offloading their mobile traffic onto the Wi-Fi network. They chose Sandvine to overcome this challenge. The Sandvine Policy Engine performs per-subscriber URL categorization and delivers location awareness in the Wi-Fi network; Sandvine OutReach provides in-browser notification for advertisements fetched from a content server provided by the mobile carrier. Subscribers benefit is to gain access to free data usage in exchange for viewing advertisements; however, unlike most advertising, these are personalized to individual subscriber interests and can even be location-specific.