Works great! I bought $400 worth last night...received the gift certificate via e-mail instantly. The credits posted this morning.

Very easy, and a great deal. I may buy some more.

This, combined with the double credits from Milwaukee, will give me 12 credits for two round trip tickets. Great deal! Heck, if I use 8 credtis for two one-way upgrades, I am still netting 4 credits, which is what I would normally get for two round-trips.