Hi My name is Justin and I also consider my self a master of the crack. Some unusual places i crack are my p***s (i can crack it two ways), collar bone and chest. Its funny when i crack my p***s because girls get so grossed out by it lol. Needless to say its a habit that im afraid i cannot stop, but i am relieved that the general consensus is that you cant get arthritis, because i am always performing activities that involve my hands such as playing the piano, and golfing. The only problem with cracking my hands (by the way i can crack each finger in at least 2 or 3 places) is that when i play golf, particularly in cold weather, i feel pain in my hands after gripping the club for a while and making contact with the ground. I get scared that im getting arthritis but my hands are perfectly fine in warm weather, so its all good. Thanks for making this site i feel so much better!