Anyone know much about SD media cards?

[Sauer Grapes]

Depending on the brand of the card, some offer data recovery services for free IIRC. If it's a value card, you'll be paying for those services. I was told by an employee at Nikon, that ANY camera card should be reformatted anytime it's inserted in a camera. That means no more "storing" pictures on cards you intend to reuse.

I remember that there is some software called Advanced File Recovery, you can use it to recover your data from SD card