Not sure about a sd memory card, although i have a sandisk memory card for my phone and my psp, they work perfectly fine. What baffles me is they transfer data at least at the same speed as Sony memory sticks but there cheaper!
Yeah! I think they're the best! I have a 1GB Sandisk SD card for my camera and it's great, there isn't any buffer time, Straight to the card, Great transfer rate!
Personally I've had bad luck with all my Sandisk cards. Some of them wouldn't work in my card readers, my old Minolta sometimes wouldn't detect the card, and I have had files lost on them too...