Finder PluginMost likely the number one feature in terms of usability is the Finder & Quicklook plugin. If you have ever had to find a specific fractal in a sea of thousands, this plugin is a blessing.
Getting the Finder PluginGo to the Support page to download the free plugin.
The Finder plugin generates thumbnail images of your fractals from tiny to big (512x512 pixels). The finder provides a slider in the left corner of the bottom status bar to change the thumbnail sizes.
Finder CoverFlow mode also supports the fractal thumbnails. Its a bit of a gimmick, but it works.
If you select any fractal file in the Finder and press the Spacebar, a large Quicklook view of the fractal will appear: