I think your initial opinion of it is pretty close to the mark.
I went to the meeting The first thing I noticed is how the people seemed to be dependant on it.
I did some research and didn't like what I found. IMO, it is cult. A secular cult. The members use catchy phrases like "you don't know what you don't know" (which is true.)
I'd stay away.
Here is a anti-landmark link for more info: http://homepage.mac.com/jk8/landmark/
I suggest you look at their site, which is www.landmarkeducation.com. The new version, which I proofed this summer, just went live. There is a lot of information there, and the overwhelming impression I got - and I read every single word that went online - is that the goal of these seminars is to create a self-reliant, honest person who is accountable for their words, actions, and lives. It sounds more conservative than new-agey to me.
I have never gone to a forum, and probably won't. However, there is sufficient information on there to debunk the "It's a cult!" claims. There is no "cult of personality" (unlike, say, the DNC :-) ), and they don't mind if you go to the bathroom (more grins). From what I've read in the materials, there is a commitment to being honest with yourself, and therefore, with others, and to stop using excuses to get through the day.
On a personal note, I can say that out of the many people I have worked with in my 16 years of being in business for myself (as well as the previous 12 years of working as an employee in a variety of fields), every representative of Landmark has been unfailingly honest, clear, and accountable for everything they did and said. I cannot say that many other people with whom I've worked have been as consistently honorable and honest (and that includes paying me not only on time, but early).
I've always believed that you can tell a lot about a person, and a company, by the way they treat the "little people." They have treated me with the utmost respect for my time and talents, and have kept every promise made to me. So, that's my experience.
My gut feeling? I don't believe that a few days spent in honest self-examination can be harmful. Please let me know if I've addressed your concerns accurately, or if you need to contact me through FReepmail, just let me know.
Best...