When Clayton Christensen talks, CEOs listen. Christensen is a Harvard School of Business Associate Professor who has CEOs re-thinking their growth strategies with his concept of disruptive technologies.

Now Christensen is talking about free software gaining a greater market share by getting small. More specifically, by getting small and onto handheld devices. He suggested that Microsoft should seriously consider getting into the Linux space by buying or building a separate company to pursue disruption on BlackBerry-like devices.