Let me be the first to review then. I've been keeping an eye on S3 and wished there was a simple service that allowed me to use it for back-up purposes. I had seen one related to iTunes but not using regular files/documents. Well, this is the answer. I haven't tried the automated back-up option but simply being able to drag files/folders to a mounted volume is awesome. My upload speeds are 500-650 kbps which is great. I'm not using it to back-up all my project folders but just ones that I need access to from multiple locations. The pricing for S3 makes this ridiculously inexpensive. Try it.