The idiots who write these reviews most likely have never used a Mac. For stills, that camera has the typical USB connection. On Macs, there is a built-in program called Image Capture that allows you to download both still images and any movies from the camera. Also, using the same cable connection, and if you don't want to use Image Capture, you can double-click on the camera image on the desktop to see what's inside, then you can save the movie files to a folder and use a number of programs to open and edit if you choose. Not sure what "limited Mac software support" means. I guess because a Mac doesn't come with Windows Media Player or Movie Maker, the writers felt they didn't know how a Mac would connect and work with the camera, so this was a safe thing to say.
I just purchased the Sony Cyber-shot DSC-HX9V camera and listed under PROS & CONS was the comment "limited mac software support". What exactly does that mean? What does the camera support and what DOESN'T it support. That seemed like a vague statement.