Earn 8 Rapid Rewards credits with any Earthlink service and 8 Rapid Rewards credits for switching to MCI long distance by April 30 (call 800 421-6773 and tell them you want to switch for 8 Southwest credits and that you’re signing up for the MCI Nationwide service at $2.95 a month and 5 cents per minute for state-to-state calling.). 16 credits is a free ticket.

Update: Gary Steiger tells me that the MCI phone number doesn’t work from all area codes, but that dialing (800) 340-2030 will work for everyone.