Another 2 million or more jobs will vanish this year, economists predict.This week alone, tens of thousands of new layoffs were announced by companies including Ford Motor Co., Eastman Kodak Co., Black & Decker Corp., Boeing Co., Pfizer Inc., Caterpillar Inc., Home Depot Inc. and Target Corp.The economy's slowdown also has caused once surging prices to retreat, and companies are discounting to lur