well for all those that said it wouldn't work, I have a friend who booked two round trips the first leg was yesterday he checked in on line for the first leg then missed it. a few hours latter his next flight was available for check in and was subsequently canceled. he called delta and they said since he was already checked in they would reactivate the ticket he is on the flight right now. has anyone ever heard of this? maybe it only works on delta? was it a mistake?