Problem I have with 911 conspiracies is the amount of faith they require for a large number of individuals to act with perfect coordination in full view of the public. Never a whistle blower, never new information. Never a crewmember or passenger ever turning up.
If building 7 was a controlled demolition then so were the twin towers. The second plane hitting the towers was watched by hundreds of millions of people in real time from different angles. For wtc 7 to be a controlled demolition, this second tower strike had to be a coordinated airshow of some sort performed for a live global audience of hundreds of millions. David Copperfield couldn't pull that off in his prime.
That is not to say unsavory characters didn't take full advantage of the attack to capitalize, but the attack itself wasn't staged. No part of it. One has to be Corkey level retarded to believe otherwise.