As mentioned before, I feel geotagging is an important part of image metadata. In a previous post, I showed a simple Applescript-based Snow Leopard service to set images to a commonly used location.

With a slight modification to the Applescript in the service, you can pull the location out of Google Earth and embed your photos. I was really excited when Picasa supposedly had this feature, but it's not mac compatible! Now, iPhoto can do the same thing.