Ginge,
Your reaction to Landmark is quite similar to mine. After the inital euphoria wore off, I was the same person, though the feeling I'd been hoodwinked grew and persisted. However, if that's the worst thing that happened to you (feeling conned), consider yourself lucky! Many of the folks who write in here have suffered the loss of jobs, loving relationships and mental health.
Forum:
Large Group Awareness Training, "Human Potential"