I was going to answer this on the other topic, but I really felt that this deserved its own discussion.
Evan sensei offers up some very useful advice about choking someone out and what positio to leave them in; however, what we should understand is that if you are going to perform a caratoid choke (hadaka jime for example), be prepared for a major accident. No one, and I mean no one, can tell what will happen after you slow or stop the blood flow to the brain. Some people may never wake up again. BE PREPARED!