Upstream Worldwide, Inc. announced that it has appointed consumer marketing and management veteran Sergio Zyman as executive chairman of the board of the company, effective from January 31, 2012. Michael Brauser, who has served as non-executive chairman, will continue in his current role. As executive chairman, Zyman will work with CEO Douglas Feirstein and his management team as the company seeks to build on company's position as a marketplace for consumers who want to sell their smart phones and electronics online. Zyman is one of the world's foremost marketing experts, perhaps best known for putting the fizz back into Coca-Cola's fortunes in the 1980s and 1990s during two tenures with the company, the most recent as the first-ever Chief Marketing Officer at Coca-Cola.