I felt that Richard was perhaps a little too nice, this guy is dedicated to discrediting everything he says.
Check out his version of events at http://forums.randi.org/showthread.php?t=150677
As a practitioner of skepticism (only believing where the evidence points to eg. no UFO's, Bigfoot, psychic powers etc.) I still cannot believe how dedicated they are to the official story, I thought these guys would be scratching their chins and saying "on balance, the alternative story of 9/11 does have some merit". Although maybe the skeptics for 9/11 truth back away from the site leaving only the hardcore debunkers.
I only started getting into skepticism because they cover scientific topics, overall I think there's a lot bigger fish to fry than "snake oil" and pseudoscience.