"While the Mac App Store is great, I still find myself downloading .dmg files and installing plenty of third-party software. I often forget to delete .dmg files after I've installed applications. Here's a script to automatically move the .dmg file to the trash when you eject the disk image.
To use this script, select the mounted volume in the Finder (or in the "Devices" section of the Finder sidebar), and trigger this script via your favorite macro app instead of ejecting the disk image normally. "
"Check out MakeUseOf cheat sheets that list shortcuts for a number of essential programs that you probably use on a daily basis. Those will definitely make you more productive. All free. Enjoy! Share them with everyone!
To download them you just need a password. Simply subscribe to MakeUseOf Newsletter using your email below to get it. The password will be instantly emailed to you once you have confirmed your subscription."