Pay-As-You-Go Software for the Developing World - Clark Boyd, Technology Review

In South Africa, a legal copy of the Professional version of Microsoft Office can cost more than $700. That makes the software beyond the reach of many personal-computer users, and even small businesses. So Microsoft South Africa has launched a "Pre-Paid Edition" of Office that comes bundled with new computers. A buyer can choose to pay $30 for three months of usage, and then resubscribe to the service every three months after that.

Read More..