Those articles are the reason I subscrib to BPL as well. They became the definitive texts because they took on a broadly applicable subject, described the various alternatives, and then tested to identify their relative strengths and weaknesses. I loved all the effort put in to the wool vs. synthetic argument to determine that there is very little if any difference. That's science at its best: when facts are used to determine merit, rather than folklore, that so much of the internet relies on.
I would add last years series on winter footwear and the stove carbon monoxide study to this category. So that's 2 in a year. Compared to the rate of previous years this was a bit slow, but it took 4 years to accumulate the articles above so it's not far off the mark.
A thought the wood fire articles were on this level. As Mike said, time and user testing will determine the accuracy of the information. I liked the early season trekking article too, but thought it more of a style that suggests a few tips and tricks rather than thoroughly examines many different possibilities. Not that a few tips and tricks aren't helpful.
Where I think BPL has struggled interestingly enough is on the gear side. There have been numerous gear reviews, probably more than ever so volume is not a problem. But each time it is a single piece in isolation. This tells us if something is a complete dud, but the unique thing that BPL did was to do thorough bake offs off all products in a category. These are now several years out of date.
I would like to see BPL adopt the Consumer Reports model of product review were an article is a living document with new products being incorporated and compared to the existing products in the category. This is not easy to do as it requires a repeatable testing methodology. But if it was easy anyone could do it.
To me it's only interesting to highlight a product in isolation if it breaks the established rules of the category.
As for the trip reports and other that I and others have complained about and as Mike correctly points out have gotten numerous positive responses from other members: I often read trail journals and blogs to learn about beautiful places, see some pretty pictures, and hopefully get a taste of the joy of being in the wilderness. BTW if you haven't checked out Chris Townsend's blog, I recommend it. He takes some nice pictures. So I don't mind this stuff showing up on BPL even if there are plenty of other places to find the same thing. I just hope that that is in addition to and not replacing the kind of work that Craig sited above which I have found no where except on BPL.
Man that was a long rant. Sorry for that. I really need to get off my soap box and go hiking.
p.s. did any one actually read this far? You might need to go hiking too. :)