I think this is kind of similar to why I started my website and made the insider and insider project forums as well as the technical resources section.
The insider project section has been slow but the content is cool and high quality.
I think many of us use many areas of different forums for this goal. Sometimes it's a thread like over on PBN in the Custom Cad's thread, or voided warranty or sometimes it's a full section like you have here on MCB.
With anything like this I think the issue is to keep enough content for the niche so that people become regulars to it and join in.
That's not always easy though.
I am currently "working on" putting enough tools into my new lathe.
So I can start making cool stuff with it.
Pictures once I get back to the machine...