Rumor has it that Microsoft has arbitrarily limited its definition of "netbook" to machines with screens smaller than 10.2 inches.  This move is presumably intended to force more consumers to pay for the full version of Windows 7, rather than buying the less expensive (and less usable) "Starter" or "Home Basic" editions.  But this strategy could backfire by driving sales of Linux-based netbooks, leaving Microsoft out in the cold.