From what I've tried and what I've read on this board, it seems that these tapes are godsents, almost. Whenever I tell my friends and family about them though, they ask me this:

"Wouldn't all of life's problems be eliminated if these were really useable and effective?"

I wonder myself, and was interested if anyone had any concrete evidence on the effectiveness of parliminal hypnosis and the psychology related to it, or suggestions on why the entire world does not practice it?