Below are some of the websites I visited, both pro- and anti-. Hopefully you will find them a useful aid to making up your own mind.
Tom Hume’s blog - an interesting post, with lots of comments which led me further, to The Truth about Human Potential Seminars / Total Group Awareness Training Truth - two sites for a blog apparently set up to debunk Landmark.
The Skeptic’s Dictionary entry on Landmark.
THE FREETHINKERS PAGE - a rambling personal account with lots of interesting comment - anyone who quotes Frank Zappa is ok with me.
Apologetics Index - another site investigating Landmark, which seems to anticipate harassment and feels obliged to print all sorts of legal disclaimers.
The Scoop About the Landmark Forum - a fan site
What’s the deal about Landmark Education? - a broadly favourable site, hosted by “psychology professionals” (sorry, my bias is showing)
Cult Awareness Information Centre (CAIC) - a general site providing information about a large number of cult organisations. This page in the site gives access to “Journey to the Land of the New Gurus” - a French TV documentary about the Landmark Forum.
The Rick Ross Institute investigates a number of organisations, including Landmark.