at 1 time, you could use them back to back for mr's [i never checked the rules to see if this was a no no]....now, you rarely see them...

the only mr my bw did was net savers dfw-lga w nested lga-dfw....she needed it for plt 1 year during the period when we were doing 4-5 intl trips/year....none of the flights were near full, so aa made net money....