Last Modified Category

At the minute, I use the "Last Added" category, but it occurred to me that a "Last Modified" category might be more useful, as "Last Added" gets polluted when I rename and/or move files (and is meaningless on initial database population).
Note: By "Last Modified", I'm suggesting using the "Last Modified" date/time of the files.
Note: By "Last Modified", I'm suggesting using the "Last Modified" date/time of the files.