Update: This coupon expires tonight! Use a gmail account to get a coupon instantaneously!
Originally posted on 11/26:
Airtran is offering a $20 coupon off one-way flights for subscribing to their Net Escapes emails.
Travel must be booked by 12/01 and completed by 04/30/09.
Limit of one $20 coupon per email address.
HT: SBS