You can use this same property of xor to make a double-linked list using just one pointer per item, which is xor of the previous and next item addresses!
Well it is a memory optimization where the interest would be to reduce cache misses or memory consumption. I have never felt the need to use such a thing seriously but I find it a neat trick.
It can only be used when walking the list of course, which is quite likely why it is not more widely used -- it does not provide the benefit that a regular double linked list is mostly used for.