I wasted about 12 minutes of my life on that. Consider me well and truly unimpressed. Emotional arguments and speculations along with what seems to me like cherry picking of information.
A short video highlighting some of the problems with the tower 7 conspiracies:
[video=youtube;tbPpK-oWdYc]http://www.youtube.com/watch?v=tbPpK-oWdYc[/video]
A link to a site handling some of the conspiracies for reference:
http://www.debunking911.com/WTC7.htm
I can't be bothered watching the entire original video. What seems obvious from the little I did watch is that they consistently show images and video from the sides of the building that didn't face the falling towers. The damage to WTC7 was likely massive as indicated by the images in the video and link I posted. This damage would obviously be on the side facing the two larger buildings. To me it seems as obvious that images depicting that damage properly are hard to come by. The smoking ruins of the two towers would be in the way and of course WTC7 itself was burning and heavy smoke was coming out of it. Presenting this, along with the available pictures would to me seem like a fair representation of the situation, what the original conspiracy video presented seems far from it.
From around 10 minutes in the conspiracy video they talk about explosions. Surprise surprise when exposed to long lasting fires there's stuff in a high rise building that will blow up. They then show firemen and others walking away talking about how they expect the building to come down. They're the ones on the ground that have been fairly close to the building, they've seen what's going on and probably at least some of the damage to the building. They're expecting the building to come down. The video I posted also claims that media outlets were reporting that the building was likely to come down before it collapsed based on reports from the fire department, although I don't have a link confirming that on hand.
The conspiracy video of course compares this "office fire" to other fires in high rise buildings. Buildings like these are built to stay up despite fire, sure. But have they been built to withstand the kind of damage WTC7 suffered when the two towers collapsed next to it, followed by uncontrolled fires? I'm not so sure. At the very least comparisons to what have been only office fires in other buildings seems rather irrelevant to me, and also seems rather disingenuous when compared directly without mention of the damage to WTC7.
The conspiracy video seems to lean quite heavily on the authority of the 1500+ (now 2000+) architects and engineers that have signed their petition. However, I think it's important to point out that the petition is only a call for an independent investigation, not a statement that all of the signatories believe there was a conspiracy. It's easy to get overwhelmed by the number of experts, but even with this fairly vague wording of the petition including no statements of what these people believe the numbers are fairly small. The AIA (American Institute of Architects) has over 80 thousand members according to their website. The American Society of Civil Engineers has over 120 thousand members. In addition there are other relevant organizations with even more members.
Long story short, I'm not impressed.