The traditional folder structure used to house files is functional, but it not necessarily the best thought out way of organising files. When thinking about a file, you are more likely to remember details about some of its attributes rather than where it was stored - this is particularly true if you work with a large number of files, particularly files over a prolonged time frame.
By assigning tags to your files, it is possible to perform effective searches to track down files regardless of where they may be stored. Search results are displayed using scalable icons that allow for easy browsing.
Tags can be used in conjunction with folders to allow for the fine-tuning of searching with the idea being that even the most disorganised of hard drives can be brought to order.
Leap includes a loupe tool to allow for the viewing of extra files information. The program is a glimpse of how other file organisation tools may operate in years to come, but for the time being it is more of a curiosity than a serious replacement for Finder.