Well, for me, I use it as a general way of remembering things and visualizing things, not so much as a way to keep an order. I'm a very visual thinker, so it helps me to make 'pictures' in my memory palace to remember passwords, page numbers of important passages, things like that. I'm currently practicing a technique for increasing my ability to associate dream signs with reality checks (taken from LaBerge) and each morning I 'program' the day's targets into a part of my memory palace. It works well and if I miss the stimulus the first time, I almost always get it several more times that day at least. So that is just one application of the technique.