Does the adcom really take into consideration letters of intent when they make admissions decisions? It seems like, in most cases, LOI's are sent after your file has been reviewed (i.e., post-interview or post-waitlist). Would the adcom more likely admit someone off the waitling list who wrote an LOI over someone who didn't? Does the adcom treat LOI's seriously? Also, are thank you notes really necessary? Does it affect an applican'ts evalution? Would you frown upon an applicant who didn't write a thank you note? I know they're common courtesy, but it seems kinda empty and meaningless if everyone wrote notes just saying "Thank you for interviewing me." Thanks in advance!