How to Secure Erase Free Space on Mac Drives with OS X El Capitan

Many Mac users running a modern version of OS X El Capitan have noticed the Secure Erase Free Space feature has gone missing from Disk Utility. What the “Erase Free Space” feature did (and still does in prior versions of Mac OS X) was overwrite the free space on a drive to prevent file recovery, adding a layer of security and privacy to file removal, much in the way that Secure Empty Trash performed a similar function of overwriting data after removal.

Source: How to Secure Erase Free Space on Mac Drives with OS X El Capitan (OS X Daily)

Quitter for Mac Automatically Quits or Hides Apps After Inactivity 

Mac: It’s easy to let the amount of Mac apps you have open at any given time spin out of control. Quitter’s an app from Instapaper developer Marco Arment that’ll quit or hide any app you want after a period of inactivity.

Source: Quitter for Mac Automatically Quits or Hides Apps After Inactivity  (Lifehacker)

HDTV Overscan: What It Is and Why You Should (Probably) Turn It Off

Here’s something you may not know: that HDTV that you love so much probably doesn’t show the whole picture on its screen. In fact, up to five percent of the picture can get cut off around the edges—this is called overscan. It’s old technology that’s left over from the CRT (cathode ray tube) televisions of yesteryear. Here’s why it existed in the first place, why it’s still used today, and how to (hopefully) turn it off on your TV.

Source: HDTV Overscan: What It Is and Why You Should (Probably) Turn It Off