This morning, I received an online check-in reminder email for JM. I have received a few things for JM over the last year or so, including apologies for late flights and monthly statements. However, this email included her name--with my MP number--and when I clicked Check-in, it took me to the check-in confirmation page for her and her companion.

Under her name was an MP number that was not mine. My account has not been charged for her XY tickets to MEX. So far, I've resisted the temptation to give the two of them middle seats in E- ten rows apart. But this is a kind-of-scary IT glitch.