Have you used Valve's popular Steam service to install and play games on your Mac?
If so, you may be wasting a lot of hard drive space. Steam makes it easy to download and play great Mac games. Steam hides your downloaded games, though, which makes it easy to waste dozens or hundreds of GB of hard drive space. Here's how to reclaim it.
I just ran DaisyDisk on my Mac and discovered that I have more than 100 GB of files dedicated to Steam. I don't play most of those games. Can I just delete them?
Full story from the iMore Blog...