Yes, its only valid on SWABIZ and has purchase and travel restrictions as well.

For all you SWABIZers . . .

Terms and Conditions

• $10 discount off roundtrip travel is only applicable for air reservations purchased through www.swabiz.com. Reservations made through southwest.com or southwestvacations.com are not eligible for this promotion.
• $10 discount does not apply to or include taxes and fees.
• Purchase and travel must be made October 27 through November 6, 2008.
• Roundtrip travel is required.
• Discount is only valid when entering the correct Promotion Code and is not combinable with other Promotion Codes or fares available exclusively through the web tool "DING!".
• Discount only applies to "Anytime" fares. It does not apply to "Business Select", "Wanna Get Away", "Senior", or any other fares.
• Changes made to the itinerary after purchase may eliminate qualifications and therefore discount for this promotion.
• Infant, Child, Youth, Military, and Federal Government fares are not available for purchase at www.swabiz.com.