As reported by MacGasm (great site, unfortunate name), Apple is giving luddites an incentive to join the rest of us that are enjoying the benefits of iCloud by offering a free upgrade to Snow Leopard . The holdovers that still run the venerable OSX Leopard must first upgrade to Snow Leopard before they can make the jump to Lion, hence the carrot offered by Apple. Even without the free upgrade those that are looking to run the latest and shiniest still have it better than our Microsoft-encumbered friends; upgrades from the venerable XP to Windows 7 Home Premium is still running well over $100 from the Microsoft website.
Provided your Mac is Lion-capable you really should look into upgrading; I did so on the day the latest version of OSX was available and haven’t been disappointed. Click through for more information; I think you’ll be glad you did.