Nope. I have no idea why that name is used term here. There is nothing remotely waterfall-like about what's shown on that page. I thought it was going to be so

Nope. I have no idea why that name is used term here. There is nothing remotely waterfall-like about what's shown on that page. I thought it was going to be something like CoverFlow (the page-flipping paradigm that Apple tried to popularize years ago in iTunes), but vertical. Regardless, this little utility looks very nice! It addresses the irritating lack of a simple image browser that lets you move files around.