I was sifting through my saved Pms and thought it would be handy to have Sub-folders. Take for example me, I keep all my possible future projects in Pm's I have sent to myself, I also keep funny conversations we have in chat (mostly general), I also keep other information I feel to be important in there. However this means that I have to scramble through many pms to find the right one, I just thought that having sub-folders would be useful. *I did look on the to be revamped/added page but didn't see anything about Private messages. Sorry to bother you if this is already being planned.