In any case, building this sort of thing is a pain. The most obvious problem is the size of the images. Glacier is an interesting backup solution, and had just come out around the time I decided to stop working on my app. A less obvious problem is raw conversion. All the best converters are proprietary, meaning that I had to piggy back off the Mac OS converter engines. Again, I never got to the point where I felt the product was worth the trouble of buying racking up a Mac Mini to run a little market test. Maybe I'm wrong.
I had a (frankly somewhat scattered) draft of a post mortem written, and since it seems like there's some interest in this subject, I posted it: http://scraps.bigbento.com/2013/05/30/hiatus.html