I have tried a couple of times, but didn't get much, but then, I wasn't very well versed on the psychic and paranormal then. I feel that automatic writing is not so much allowing someone/something to control you... I see it as more like channeling. You are picking up the information, much as a regular psychic doing a reading, and it transfers to writing via your subconscious, and your hand seems to work as if it had it's own mind. I could be way off track here, but this is the general feeling I get about automatic writing.
azspirit