Well it depends of what you are talking about. Usually people who produce contents are power users. But people who search content as you said are the 95% of others users, these are the ones who also needs a search relevant to them.

My belief is that knowledge management can't exist without power users, which we call "admins", these are the ones responsible to make sure content is well organized for others and create content if necessary. Those people need specific tools to do their job well, which to me is more something that you can have in an admin interface while all the users use the basic interface.

Those tools have two sets of users, admins (curators, creators, organizers) and regular users. We need a different interface for both. And that's exactly what we are working on.

> This isn't a byzantine environment like public web search is, why do I have to hack around the wiki's default notion of page relevance?

That's exactly why I suggested to have multi titles, when you get that and you facilitate the suggestion of new titles for a document, anyone when finding a document can suggest the query terms he used, and that can benefit others users