The document discusses several case studies of mobile advertising campaigns. It describes the objectives, solutions, and results for campaigns run by companies like John Lewis, The Economist, Mini, BBC Top Gear, Hotel Tonight, Priceline, YPlan, Cut the Rope, Pfizer, and Facebook. The solutions involved strategies like targeted placements, premium inventory, geo-fencing, optimization, and multi-variant testing. The results generally exceeded expectations by increasing traffic, sales, leads, downloads, and subscriptions.