Back to the usability idea ... One should be able to have a UNIQUE reference number for each and every post. If users/moderators take the time to review posts, then they should be able to reference them BY NUMBER in their own personal notes and to others.

Right now I cannot possibly suggest that you refer to comment xxxx from date xxxx under topic xxxx .....

How about a simple SQL database to track things ??? These pop-up subcategories by keyword search are helpful, but they are not nearly complete !

PS Number = xxxxxxxx + Section + 2 keywords + YYYYmmDD