SA, thank you for starting this thread. I have little to add, but I hope it becomes popular and informative – so I suggest you draw attention to it and link to it from Craig’s comments sections, when appropriate.
Embedding – warning to all commenters:
The WTC7 thread became unusable due to the forum software embedding content from linked websites, especially YouTube videos. Please don’t post naked URLs – use the HTML ‘a’ tag instead (manually, or by using the ‘link’ button above the comment form), to turn some word or phrase into a link.
The forums have no pagination; they just get longer and longer. If naked URLs are posted, so much external content gets embedded that the page demands excessive memory (over a gigabyte) and may never complete loading.