MilesBuzz! - Become a t-mobile customer and get free flight

I don't know how credible:
http://www.t-mobilefreeflight.com/customer.asp

but it's from "famous" TLC :)

Seems like TLC learned some lessons from previous disasters; the T&Cs are now more detailed (w/r/t "promotional availability") than previous offers. And, most importantly, they deleted some expensive departure cities.

Among the missing "expensive" departure cities this time is Austin, TX.