just trolling around, i disagree here. i think it's important to tell a program they are your #1. my deans, most students ive talked to who matched inthe past have also felt this way....a number of programs i've interviewed at have stated that it matters if they are your#1 etc, they often actually _move people up_ in their own rank list if they find out they are ranking them # 1 etc. programs want people who want to go there-it makes a difference to them. telling programs you are "ranking them highly" essentially means nothing at this point, everyone is saying that to them, it's vague, and who knows where you'll rank them, if you tell them they are your #1, they care much more about that.. if you are someone they liked, vs people ahead of you on their list who were equally as strong though not as verbal about their interest, there's a chance they'll move you up. at least this is how i understand things.. granted, this is an assumption, but so is the above (an approach I also understand, but wouldnt risk).