A little disappointment, free from Apple

Apple’s Mac OS X offers a feature called AirDrop which facilitates file transfers directly between two Apple devices that are on the same network. For some users (me), it will not work because my iMac was made before 2009.
Yosemite is free, so what the heck … and AirDrop, frankly, is a trivial frill … but if you were expecting to try it and your Mac is older than Apple likes, you’re out of luck.