Cool stuff. I've never given a lot of thought to ping listing. I would probably everyone on my list within a week.
Pokey78 has a much-used ping list for Mark Steyn's pieces. If you do it, you could probably start with the names of people who have commented on other Derbyshire columns (always, of course, with the reminder that anyone who wants to be added or removed can just FReepmail you!).
Also, what some posters do (sort of truth in advertising, I guess) is put the name of a well-liked author (like Mark Steyn, Ann Coulter, Thomas Sowell) in parentheses after the title so that the casual Freeper who sees it knows what to expect, or can just search favorite writers' names by Title.