Henry, the courses you nominated that did not receive a second were not added to the list. If someone wants to second any of those courses today I will accept it.
This is a copy of what Tom D said in his creation of this list, hopefully this answers any questions you might have:
"I have quickly gone through the old GOLF WORLD lists of the best courses in the UK and Ireland and the best in Continental Europe, as well as the GOLF DIGEST "Planet Golf" List of the best courses in 197 (!) countries. If you use all those lists you get something like 250 challengers, even though realistically only 50 of those courses would ever get any serious support for the top 100 courses in the world.
I'll list them all, and put asterisks by the ones I think you should bother putting on the ballot."
(He put asterisks on all the Canadian courses on his lists BTW)