The question as stated pretty much says it all.
The context is:
I know the size of spaces when they are created from my templates.
For administrative purposes, I'd like to be able to quickly identify all spaces across the site that have had no pages or attachments added to them since their initial creation.
I hope I can be pointed to an existing report or 3rd party add-on that can provide this information--or other information that can be used to achieve the same result--distinguishing used from never-been-used spaces on my site.
Thank you for any pointers,
Juan