If you're wondering what an EyeFi card is. No it isn't another iPhone toy. Although there is an iPhone EyeFi app.
It is a WiFi enabled 8GB SDHC memory card for the camera. It is supposed to wirelessly transfer pics from the camera to the computer, or upload to Flickr, whenever it is in range of the wireless receiver.
It did transfer the test shot, but we'll see how well it works with lots of pics on the card.