Mobile changing the world – and classifieds as well by Katja Riefler in Uncategorized 24 Feb 2011 By Katja Riefler BARCELONA — What a huge crowd! More than 60,000 visitors from 200 countries attended the 2011 GSMA Mobile World Congress last week in Barcelona, marking a record for the mobile industry’s four-day conference and exhibition. The organizers lined-up an impressive bunch of CEOs from telcos and tech companies that de This article is only available to AIM Group clients. Please subscribe now or log in to view. Share CIRMobileStrategy Katja Riefler Katja Riefler, AIM Group principal and director for Europe, Middle East and Africa, has a broad background working with newspapers, trade associations and online services to shape media companies for the future. She is based in Munich and travels regularly throughout Europe and frequently to the United States.