TO GO WITH AFP STORY BY NATALIA RAMOS
Twitter’s brand marks are seen as background of the speakers during their press conference in Sao Paulo, Brazil on Februrary 20, 2013. Twitter began hunting for clients in Brazil with an eye on the upcoming Fifa World Cup Brazil 2014 and the Rio Olympic Games 2016. AFP PHOTO/Yasuyoshi CHIBA (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)