Erik Warburg is MD of Posterscope South Africa (www.posterscope.com), part of Aegis Media and one of the world's largest out-of-home communications agencies, with offices in 21 countries. In 2009, under Erik's leadership, Posterscope pioneered the first-ever comprehensive and accurate data on South African media and marketing segments. Email him at and find him on Skype as erik_warburg.