Jen, perhaps it is because we are both relatively younger, but both my wife and I heard about Wikipedia within a year or so of its creation. It seems a bit uncharitable to suggest that no one else could have heard about it.
That aside, I don't see much in the way of clear justification of what problems MEPedia solves, why it is the best way to solve those problems, and why so much energy should be spent on it relative to other avenues.
The difficulty of sorting through treatments seems the clearest use case from what you've written and from where commenters have focused in this thread, but advancements in research will make most of the energy spent in that space somewhat moot and devoting time to that space is already questionable given that only a few treatments have any consistent value. Will having spent time on threads such as cocoa and coffee enemas provide wide benefit when patients can access treatments like ampligen and Rituxan? I don't know. Perhaps, though I suspect not.
If you set aside sifting through potential treatment options as the primary use case, the other use cases are considerably narrower. The most obvious is as a general reference for learning about the disease for patients or, potentially, other stakeholders such as caregivers, doctors, journalists, political folk, etc, more in line with the traditional use of wiki. That use case holds the most value, in my opinion, but I question whether the more democratic processes of a wiki are the best way to assemble that sort of information given the complexity of ideas, depth of knowledge required, and general controversy that surrounds the disease, even within the community. How do you handle, for example, the people who argue that ME is just untreated Lyme disease or that we are all sick because of mold exposure or that person going around saying we all have non-HIV AIDS. How do you handle judgments about the role of insurance companies in the trajectory of how this disease has been managed? Or, alternatively, has HHS historically sought to marginalize this disease or have they just been incompetent, or some other explanation? It may be manageable to discuss each of these sorts of issues in isolation, but when it comes time to bring things up a level, value judgments must be made. Who has the ultimate authority to make those judgments? And is it worth the energy and friction to reach consensus among a group?
I also question whether, with such little capacity for advocacy, it makes sense for the people best positioned to assemble this information to spend their limited energy in this space. Does it make sense for the more recognized experts on history, politics, and biology, etc. (such as Tom Kindlon and my mom, Mary Dimmock) to spend their energy trying to create these materials on a forum like wiki, when there are other potential projects that could use their expertise? If not, does it make sense, and is it even workable, for the rest of us? I think there are possibly other, better ways to achieve the educational objective, but that, of course, is just my opinion.
There are significant structural and strategic questions that I haven't seen answered in this thread that, it seems to me, should have been worked through at the outset.