I like how it organizes information spatially, like WorkFlowy. I much prefer this visual organization to tags, for example. That said, I found it hard to understand what it was, even though I'm a long-time WorkFlowy user and am very interested in this kind of thing. I wrote a post where I talked about organizing information visually in more depth here: http://colemanfoley.quora.com/Mind-Mapping-with-WorkFlowy (Registration NOT required to read).