I remember back when I started seeing CF cards for the first time, and then SD got popular some years later and after that there was mini and micro SD. There are others like xD and multimedia. I didn't even find out how much faster Memory Stick Pros are, and have been, until just recently. Now microdrives are popular, mostly in MP3 players. So, I was wondering. Whatâ€™s next? What's the next gadget they're going to use for memory storage in mobile electronics, in the form of removable cards/sticks? Anyone heard anything, or read anything? I was reading about all the different MP3 players available now and got curious.