San Francisco Becomes Fastest-Shrinking U.S. City Thu Jul 10, 5:00 PM ET Add Top Stories - Reuters to My Yahoo! By Andrea Orr SAN FRANCISCO (Reuters) - I left my forwarding address in San Francisco. The foggy city by the bay, which has lost jobs and income in the technology industry bust, saw the largest population decline of any major city in the United States last year, according to U.S. Census data. San Francisco's population declined by 1.5 percent or nearly 12,000 between July 2001 and July 2002, making it the biggest loser among 242 U.S. cities with more than...