LOS ANGELES, CA -- (Marketwire) -- 03/09/11 -- Stamps.comâ® (NASDAQ: STMP), the leading provider of postage online : and shipping software : solutions to approximately 400,000 customers, today announced that it has introduced PC Postage Version 8.8 software which includes new features to help ecommerce sellers improve communication with their buyers. The software download is simple, quick and available for free to existing customers. Read more!