Flight discounts for out of town guests

A friend just forwarded this to me who thought I might find it useful...I am doing the same to all of you who might have out of towners attending your weddings. I haven't called the number on the website below yet, but if anyone does, let me know how useful it is......

http://www.usairways.com/travel/fares/wedding.htm

Thanks!

Hi Julie,

Does it matter what airline they use? Do they all have to use the same one and come from the same place?