I am not sure this concept makes any sense. It sort of reminds me of the time when I had to explain several times to my first gf that she has no need to delete stuff, because the harddrive in her PC would store 1000x her current INBOX without any issues. Her carrying the "cleanup" behaviour from the real world over to the digital world was such a problem that we (I) ended up installing HD-Guard to prevent her from wrecking the system constantly. If I learnt anything from that experience, deleting in the digital world is not the same as cleaning up in the real world.