For what its worth....I am not sending any letters. Most of the programs I have interviewed at have said that they make the list right after we leave, so a thank you letter dosent matter. Unless, someone was very nice to you and you just wanted to say thanks for the sake of being polite. I highly doubt that a thank you letter matters in getting you matched.

bump

ok, this may sound totally cheesy...
but i think you can never go wrong with good manners. if you had a great interview, send a letter. if the program is in your top three, definitely let them know. most places are interviewing 10 for each spot. i don't see how it can hurt you to be polite, or even enthusiastic if it's someplace you'd like to train.

btw, i'm not blowing smoke. i sent notes to everyone who interviewed me. not brown-nosing "it was an honor to be in your presence" crap, just "i enjoyed meeting you, thank you for taking the time.." like my momma taught me.

cheers.
firegirl