Thread:Nyastara/@comment-898730-20140515224258/@comment-1036245-20140525050543

The coding behind wikia tests for direct file links when it generates the list of pages the file is used on. So when the address link is used for a file it is practically invisible because the coding can't pick up on this. In a technical sense, the file is being used, but the system can't test for this so it gives the blank "used" field instead.

Does make it a bit troublesome for file cleanup/wiki maintenance though -- sometimes putting the use location of the file in the image description is useful.