Just noticed this posting for 500 miles to my account from my IND to DTW flight this week. Check in was at airport kiosk. Q class ticket. (And NW has not posted the actual flight miles yet, I have an "internal processing" advisory for that from the Thursday flight.) Anyone know how "High Fare--SSD Check In" is used? Haven't seen this one before but I seldom use the kiosk check in, most often print a boarding pass from home, office, or hotel business center.