I've investigated memory systems over the years and find them interesting.
One of the common themes is that you should associate the thing being memorized with something that you already know. The act of recalling the familiar thing, should help you recall the one being memorized.
For example, to remember a list of nonsense words, you'd take a walk through your house and imagine something related to the word in each room. When you wanted to remember the words you could walk the room in your mind and recall them.
This approach does in fact work, for one list, but if I want to remember a new list, each room is now already associated and the act of recalling the room will now interfere with my attempt to remember the new list's items.
How do memory systems deal with this "interference of associations" or can they? Do people who claim that these systems help them remember vast amounts have an innate ability to partition their recall?