I created a separate category for NLP simply because most of my friends are from the NLP world initially, and have branched out into other therapies such as Hypnosis, CBT,EMDR,EFT etc. There seems to be a lot of negativity towards NLP, which I think stems from bad trainers, less than adequate training techniques and generally poor input.
My philosophy for all things, including NLP is that if it works for a person, that's great, no arguments. If you're working with a client, friend, partner and they say "stop doing that NLP rubbish on me", then you've clearly not quite grasped the concept of NLP in that it should ideally become an unconscious process, not conscious. I'm being a little harsh here, as I know it took me about 3 years to really get to grips with Master prac techniques, and begin to use them on a daily basis at an unconscious level.