Well, hello again! If AT&T comes through for me, I should have my own Internet up and running again tomorrow, so perhaps I will be a bit less sporadic about posting.
But the real news of the day: a man named Ross Anderson has (with the permission of the author) posted Allan MacDonald's thesis in its entirety! The title should explain most of the interest: The Relationship Between Pibroch and Gaelic Song: Its Implications on the Performance Style of the Pibroch Urlar.
While you're at it, there is plenty of other interesting piping material (largely historical) to browse through at the same site: Ross's Music Page.