Take a breath Kay, Noone is blaming you for anything.
We as people realize that you yourself can't control anyone and make them do anything they don't want to do. Its human nature to do whatever they want. While it totally sucks for Teenster and anyone else who doesn't get a package. You did the best you could, trying to get people to send. You put numerous posts in the main threads, and you pm'ed people. That is all you can do. Noone is asking you to drive to people's houses, that's silly.
My only thought is, if the person who didn't send, signs up for the next one, nip it in the bud asap.
I feel so bad for those who don't receive gifts. It would never cross my mind if I signed up for something to not send, but that's just me.
Course it could also be the post office - There were 3 Christmas cards I never got either.....