I was just recently talking to someone who was very upset that their super cheap 32 GB card wasn't 32 GB and overwrote everything on the card when it ran out of

I was just recently talking to someone who was very upset that their super cheap 32 GB card wasn't 32 GB and overwrote everything on the card when it ran out of actual space, wiping a whole heap of awesome GoPro footage and photos. I've had a couple of cards like that before, but after reading an article about fake SD cards a while ago, I test every new SD card and flash drive I get to make sure it's to advertised capacity so I haven't been stung.