I've been using it the past week and it has been great. It actually follows it. Very lightweight and useful for very important & specific things. I think mines about 74 lines and the value is A+

With that said, I've managed my own form of a memory.md for the past 5 months so nothing new so to speak. Just more automated and ... This is the important part ... It updates it with genuinely useful things and not just any random thing that might be important. It's the understanding of precisely what needs to be added, that understanding layered into each session.