Apparently, these have been around for more than an year, but I just learned about the Eye-Fi line of SD memory cards. These amazing little devices fit in any old SD slot, and contain built in Wi-Fi and GPS capabilities. The full-featured card contains GPS functions , 8GB of storage, and SDHC compliance for only $150. There are, several other options that drop in price, along with features.
While these cards may not be for everyone, there is certainly a market for easy, accurate Geotagging of photos and forget-me-not uploading. In a world where digital cameras have become an affordable commodity, I believe the Eye-Fi technology will become as important to the camera buying process as MegaPixels are today.