Southwest Airlines is tied in with FirstUSA and gives credit for balance transfers. You get 2 segment credits for getting the credit card and up to 5 more segments for each $1,000 transferred. If you happen to have $5,000 in credit card debt (yikes!) and do this along with signing up with MCI and getting another 2 segments, this will give you more than half the credits needed (9 out of 16) towards a free ticket to such exotic Southwest destinations as Midland, TX and Spokane, WA!