I know that what Gfunk says is correct, in that the best strategy is to just rank programs in the order in which you would like to go to them, and that it is best not to try to game the system. Is that also true of the school that you inform is your #1 choice??
I have heard some people say that telling a school that they are your first choice is a "bullet that you only get to fire once". If I have a reach dream program that I interviewed at, and a pretty good program that I interviewed at, is there any sense in choosing the pretty good program as my "#1" over the dream program because it is safer? I guess my question is, does telling a program that they are your #1 change enough on the rank list that it would be a good idea to discard the conventional wisdom that you should just rank the programs in the order in which you would like to go them?