As more companies view low-income Americans as opportunities for profit, the "poverty business" is booming. BIll MOYERS JOURNAl and EXPOSE: AMERICA'S INVESTIGATIVE REPORTS follow a team of BUSINESSWEEK reporters as they track new corporate practices that some say exploit the working poor. With the economy going bust, Bill Moyers gets perspective from economist and co-director of the Center for Economic and Policy Research Dean Baker and NEW YORK TIMES op-ed columnist Bob Herbert.