Marketing Design firm’s billboards double as living spaces for the homeless Slovakian firm Design Develop is proposing turning roadside ads into places for people to live. Could the idea change the public perception of advertising? By Rachel FarrellJuly 3, 2014 SHARE Ragan Insider Premium Content To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.