I had just rebook our flights to an earlier time and noticed this little tidbit at the bottom of the page.
Effective January 28, 2011, unused travel funds may only be applied toward the purchase of future travel for the individual named on the ticket.[/B]
In the past anyone could use the credit. Most of the time we would use it ourselves but we have given a credit to our kids to use. Still a lot better than any other airline in my opinion.