My first thought when I heard about the Eye-Fi Wireless SD Memory Card was that no one would be going to need this SD card with build in WiFi but when I read a little bit further my opinion changed from No-one-needs-that to Wow-what-a-great-idea. The Eye-Fi SD cards come in sizes of 1 and 2 Gigabytes, the 2 Gigabyte version sells currently at Amazon for $99.99 which is way more than a SD card without WiFi would cost.