Interesting. I've been looking for something like this to manage my image collection on an external hard drive. I used to use Sparkbox from Icy Blaze but their recent update removed support for external drives to comply with Apple's sandboxing rules. Pixa with its Live Folders might be just the thing.
Why I would love to be winner: Because it would nicely complement my new Kaleidoscope, it would help a poor little student to be a bit more organized and the logo just reminds me of super mario meets mindcraft, that makes it a must have in my collection.
Remarkbox