Neither can I, but there does seem to be some passionate opposition to them out there.  Extra zones can make it easy to spawn magnet-screening groups for areas otherwise difficult to isolate using the Grouping Tool.  They can be useful in a scripting context.  Hmm.

===========================sigline======================================================

Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.