so i called admissions today and asked if i could check my status. the lady (sounded kind of young, and learned) told me that there are several hundred in the waitlist pool on the regular waitlist, of them about 50 are in serious consideration by the admissions committee, and of the 50 about 12 will be given an offer of admission. so i asked if i could i find out whether i'm one of the 50. she asked for my name and bday, then politely said that though this is not a definite answer, it is unlikely that i will be offered an acceptance (i.e., rejected!). so yeah... off to boston! good luck everyone else!