Not to mention those who come to realize that the reasons they signed up in the first place were not nearly as substantiated as they may have first thought... and those which are merely padded repeat signups by certainly overly zealous members... and those which agree with some minor quibble, but not the whole argument... and any number of other qualifications which would serve to deflate this nonsensical idea that the towers were brought down by controlled demolition.
If these organizations really wanted to deliver some truth, they'd delineate with great detail exactly who agrees with exactly what. They'd break down the arguments for their membership to vote on, requiring participation in the vote, in order to make a more definitive statement to the world.
But they don't.
They don't even qualify their membership.
If you wanted to go sign up on one of these truther sites, you'd be welcomed with open arms and not questioned at all. If you went to every library in your home town, you could do so without any barriers. Drive to the next town? Sure thing. The more the merrier. No questions asked. Sign right up, right here, right now.
What do you think might happen if you signed up and then later requested to be removed from the ranks? My guess is that your request would be ignored. I haven't tried myself, though the idea has crossed my mind.
By the way... excellent post. Sorry for snipping it down to this one tiny sentence for my own commentary.