What someone needs to do is create a tree hierarchy of reasonable topics mentioned so far, which could be in the form of a table-of-contents. Then people can add their requests in the appropriate place, and everyone can see the fullness of the topics without reading a zillion messages --- just imagine this thread in a few months!
Is something wrong with me putting them in the first post like I'm doing now?
If you're willing to scan all new messages and diligently keep that TOC up to date, then that's fine --- for now. Eventually I assume you'll want to put the master table of contents onto the main crossbones page (that one can click any entry to visit any subsection or specific article). Once you get the initial table-of-contents established, maybe you'll want to ask people to send you new requests and new article-offers to you via gamedev PM.
You might want to display little icons in the TOC that denote the type of each article. I suppose many articles might qualify as "gems", "tutorials", "examples", "theoretical", "practical" and so forth. I'm not sure the best way to organize this, however.
I'm still trying to visualize how this project will work out. Would you say that the long term result will be something like a huge (25,000 page) book?
One request. I would really love for every article to be available in PDF form. Software exists to convert any document into PDF (by printing to a fake printer that is actually a PDF creator app). So even if people prefer to create the original in other forms (.doc, .html, etc), they can also provide a PDF version. Personally, I'd be happiest if every article is only available in PDF. One could then create notebooks and fill them up with crossbones [and other] articles over time, and they would all be optimally formatted (under control of the authors).
Will there be some way for people to find collaborators? I can imagine 2 or 3 authors interested in the same topic might produce a better result if they collaborate to produce a single "master" article.