Basically, just run it, then look for pages with zero visits. (That's what you're looking for when you say "unused", right?)
Well-l-l-l ... not exactly. Here's the problem: pages no longer in use or referenced. Xenu shows too much, e.g.
, Xenu will show every reference to a bad link, even though that link is only bad on one (1) or two (2) pages: the link is still valid from other pages
. Obviously, there's not cause to delete the pages with that particular bad
However, there are pages, even folders, that are no longer in use
. Those are the pages/directories we'd like to delete. However runnin' 'em all down is labor- and time-intensive, as well as being prone to inadvertent error
Basically, this is a non-trivial task. I disbelieve that this is the first time it has ever cropped up, and I'm reasonably certain someone much smarter than me has created a means to ease the process. I'm lazy, so I just want to find that means