Tom:
I should have been more careful in my use of the word "promoted" in my second response. By promoting, I mean the sort of objective reporting of a course, evaluating its merits/demerits, of the sort that Matt has been doing here on GCA about Ballyneal and Dismal River. (I once drove across a section of Wyoming, and wondered -- why aren't there golf courses out here? This is great terrain. I now know of one, thanks to Matt.)
Of course, any course that wants to stay away from the limelight can do so, and any course that's out of the way that wants to promote play (for financial or other reasons) can do so, as well. The role model, so to speak, that I had in mind was Machrihanish -- by any measure, a very solid links course, but one that's very hard to get to and one that's never gone out of its way to promote itself (I talked to some members there less than enthused about Bamberger's book!). If you dumped a Machrihanish on a remote stretch of Austrailian coast, or in the middle of China, or on the dunesland of Poland, I still maintain it wouldn't take that long for it to get noticed and "promoted," in a Matt Ward-sort of way, thanks to the internet.