Two items that I think might help are
1. A more fully featured bulletin board (forum)
2. A shared blog.
We've had the Articles feature up for a long time now. Nobody's writing articles; I suspect that it's a combination of there not being enough critical mass of members AND the process of submission is probably too laborious. What I'm thinking is that anyone who wanted to could sign up to the blog and post their snarfaris, Markeroni thoughts, etc. This could serve as an outlet to the world at large to show what Markeroons get up to, and how fun this pastime is, while creating an extra layer of community for we members.
As to our forum, well, it is simple and basic and I think that we can do better. I am also sure that we will outgrow it.
A separately-run forum is a common thing in cyberspace and if I took one and adapted it for you you could get notifications of posts as they happen, subscribe to threads, and many other adventures. While I could certainly write such a thing myself, it would be a bit like reinventing the wheel when the software already exists out there.
What do you think about these ideas?