SEATTLE - Microsoft Corp. has developed technology for people to pay by the hour to use a computer in their own homes, much like how many consumers use a pre-paid card for cell phone usage. The technology, called FlexGo, will be used as part of efforts to sell computers to lower-income consumers in developing countries, where Microsoft is eager to find new money-making opportunities but is battling software piracy and other barriers. Redmond-based Microsoft, working with computer maker Lenovo Group Ltd. and others, plans to launch a second trial of the FlexGo plan in Brazil beginning Monday. In the next...