BusinessWeek--The electronic nails in the post office's coffin -- Startups such as Zumbox, Manilla, and Doxo add to the USPS's woes by digitizing bills and statements. They're trying to lure one of its main revenue sources--the nearly 48 billion bills, statements, account notices, and offers that companies send to households every year--into the electronic realm. That could make the USPS's $3.1 billion third-quarter loss seem like small change. Read more!