yeah, i agree with cagedcactus that a soul will only remain ripped for a period of time before the ripped piece of soul, like two drops of water on the car window on a rainy day, will become one with the rest of the soul. i like the idea of the object being enchanted to suck the soul piece into itself. i think it is possible to make an infinite amount of horcruxes, but the consequence of doing so will make you look physically like a corpse. afterall, when we see Riddle visit hepzibah, he is described as looking waxy. i attribute this to him having made a couple horcruxes: since he no longer has a whole soul in his body, he is slowly looking less human. as far as his snakelike appearance after his rebirth, i think it has something to do with the rudimentary body he had. i think he also found that potion he used for the rebirthing while he was researching horcruxes. put on guard by what slughorn said about being "a part-soul wandering the world" bit. afterall, if i had heard that, i would have devoted myself to creating the horcruxes, and finding the means of recreating my body if my part soul for some reason got seperated from my body. it is all tied together, i think. the first guy to create a horcrux experienced being murdered, and then he had to find a way to get a new body, and a devoted servant figured it out with help from the master, kinda like how voldemort did. snake venom and unicorn blood, bone of the father, blood of an enemy, and flesh of the servant. pretty simple potion, i think. strange.