I had this idea for some time and posts like post #4173101 gives the exact feel of something "cursed". The picture alone isn't really scary, but when you have some context or something in the art is unsettling enough, it definely becomes "cursed". That's why I thought it could be a good idea for a pool, when you see a posts that gives you the feel that it is cursed. The opposite of it is "blessed" (which pool-wise fits more with the Heart-warming pool, however, this pool contrast with heart-breaking which is more about sad posts). A good number of GreenTeaNeko comics also gives a "cursed" feel.