Segment Use Indicator

This came up for us in that we have way too many segments created by various users and are looking for some quick ways to separate out the wheat from the chaff without eyeballing every segment.  We were thinking that if we could see when it was last used, we could throw out ones not used in some X amount of time.  What we are doing right now is looking by segment creation date as a guide to whether we can delete segments.

Archiving as a duplicate of Understand where segments and calculated metrics are used – to clean up without breaking anything  - please add your votes there!