Letter Writing Marathon is to release of unjustly imprisoned political convicts from all over the world. That is why thousands people decided to send letters to ministers, members of governments and influential people to lighten the problem. The goal of campaign was to gather as many donations as possible for stamps dedicated for sending letters during Marathon. Our job was to prepare rich media creation for mobile, Facebook news feed, and display banners. Rich media format was presented when user clicked on the advertisement within his Facebook news feed.