USB sticks have a secret expiration date. Here's how to find it

This tool is great if you're cleaning out your junk drawer and don't know if an old USB stick is worth keeping around.
Ars Technica

Securely erase Samsung SSD's in a USB enclosure?

I've had 2 Samsung SSDs (840 pro and and 805/Evo) in my MacBook Pro. But due to an upgrade have a new retina model with no internal SATA. Now I need to erase these drives so that I can sell them - but ...