Well, it is not just us who has spotted what is going on.
You can read George Monbiot's Guardian article here.
Amongst the usual rambling responses from the 9/11 "Truthers" is this prescient comment from one person in Devon who seems to have seen through these clowns.
I live in Totnes in Devon. Long known as a kook-magnet, the town naturally has a particularly active 911-denier group. Their antics illustrate a couple of themes not mentioned in your article.
First, antisemitism. The local 911-deniers recently planned to show a DVD interview with one Eustace Mullins, billed as 'one of America's foremost historians'. He's actually a particularly vile Jew-baiter with a decades-long record of fascist activism. His self-published tract, 'The Biological Jew', compares Jews to rats. At the beginning of the video in question he states that Israeli 'neo-Zionists' intend to destroy all Muslims, neatly parrotting bin Laden's ideas. The screening was cancelled after what should have been obvious racism was pointed out to the organisers. The original medieval conspiracy theory featuring satanic Jews undermining Christendom from within has clearly found a new home in the 911-denier movement, as John Ronson found out when he visited the forum of the British 9/11 Truth Campaign (chaired by Annie Machon) a few months ago.
Second, the presence of David Shayler and Annie Machon, ex MI5 agents. These two jumped into the 911-denier milieu from the Stop The War Coalition before they could be pushed, and the movement has embraced them. They've been to Totnes at least twice. As far as I'm aware, nobody here has yet asked them why in 2002, the time of Shayler's high media profile, neither he nor Machon said a dickie bird about a 911 conspiracy. Similarly no one in the movement is asking why Machon's 2005 book 'Spies, Lies and Whistleblowers - MI5, MI6 and the Shayler Affair', attributes the 911 attacks to intelligence failures rather than an impossibly large, impossibly efficient cabal of impossibly clever murderers. Yet in June 2005, interviewed by the bullhorn buffoon himself, Alex Jones, Shayler says he was suspicious from the start.
The comment then finishes with this link.