Wireless
Nikon, Canon, and Kodak make cameras with built-in Wi-Fi (wireless networking). The idea is that you can send your photos by email or post them on the Web directly from the camera the next time you're in a Wi-Fi hot spot. (Or you can just upload them from the camera to your computer without having to hunt around for a USB cable.)
Tip
If this feature appeals to you, then you don't have to buy a special camera to get it. There's an amazing, weird little SD card called the Eye-Fi ($100) that endows any camera with these features. It looks and works exactly like any other SD card; it's a regular memory card. But as soon as you're in a Wi-Fi hot spot, the card automatically starts sending your photos to your computer and to the Web.
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