I do it... I figure if I shelled out >$1200 for applications and paid for a hotel/airline/gas/etc. I shouldn't leave it to chance. I agree it is a pain in the butt, but so were writing TY notes for Christmas and B-day presents when you were a kid.... In the end, it prob doesnt matter (I mean, when they are doing their rank list, I doubt they are like... this guy didn't send us a TY note, rank him #4 and this other one #3 since they sent one...).