Perkology: Register Now to Earn up to 50,000 Bonus Miles!

1. Register now through May 31, 2007.
2. Earn up to 25,000 Bonus Miles, when you apply, are approved, and use or pay the annual fee for a new WorldPerks Visa^® Signature or Business Card (or 20,000 miles for the WorldPerks Visa Platinum Card).  Apply at www.worldperksvisa.com/wpv104.
3. Earn up to 25,000 Bonus Miles, in addition to the miles you already earn, by completing qualifying mileage partner activities during the Perkology promotional period.

To register for this offer, enter your WorldPerks account number, then click 'Continue'.

PERKOLOGY TERMS & CONDITIONS:

PROMOTIONAL PERIOD:

• Registration is available March 1 - May 31, 2007.
• Members must register by entering their WorldPerks Number on this page and submitting their registration.
• Registration must be completed before any activities take place to be valid for this promotion.
• Bonus Miles count as banked miles, not Elite Qualifying Miles.

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EARN UP TO 25,000 BONUS MILES:

• Must be approved and use or pay the annual fee for a new WorldPerks Visa Signature, Platinum, or Business Card. You are eligible to receive one-time Enrollment Bonus Miles for each new WorldPerks Visa Platinum or Signature Card Account type. Existing and previous accounts do not qualify for Enrollment Bonus Miles for a similar account type.
• Up to 20,000 Bonus Miles will be award by U.S. Bank and 5,000 Bonus Miles will be award by Northwest on a Card that has been used or annual fee has been paid. Up to 20,000 Bonus Miles are awarded to new WorldPerks Visa Signature and Business Cardmembers and up to 15,000 Bonus Miles are awarded to new WorldPerks Visa Platinum Cardmembers from U.S. Bank. An additional 5,000 Bonus Miles will be awarded by Northwest to new WorldPerks Visa Signature, Business, and Platinum accounts.
• To apply for the WorldPerks Visa Perkology offer, you must click here or call (800) 369-4086 ext. 34904.

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5,000 BONUS MILE OPPORTUNITIES:

• Spend $5,000 using your WorldPerks Visa Platinum, Signature, or Business after you register and between March 1 and May 31, 2007. $5,000 spend must be on same WorldPerks Visa Card within promotional period. This Bonus Mile offer may be earned one time per product during promotional period.
• Participating Mortgage and Real Estate Mileage partners are listed below
• Loans and real estate transactions must be initiated by May 31, 2007 and closed by August 31, 2007.
• Multiple Qualifying Activities are allowed per Mortgage and Real Estate Mileage Partner.

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2,500 BONUS MILE OPPORTUNITIES:

• Communications Partners (see mileage partner list below)
  • Bonus mileage offers will be awarded for activating a new wireless service and rate plan through www.worldperkswireless.com or new satellite TV service.
  • A new account installation with EarthLink^® (Cable, DSL, Dial-Up or trueVoice home phone service), EarthLink Qualifying Activity requires either a new Dial-Up, DSL, Cable or trueVoice account or an upgraded existing EarthLink account. Mileage awarded for EarthLink Qualifying Activity must be posted to your account with a transaction date during the Promotional Period. An upgraded account is defined as an existing customer moving from a Dial-Up account to a high-speed Cable or DSL account.
  • Multiple Qualifying Activities are allowed per Communication Services Mileage Partner.

• Purchase a new WhiteTie^® concierge service annual membership.

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1,000 BONUS MILE OPPORTUNITIES:

• Hotels (see mileage partner list below)
  • Multiple Qualifying Activities are allowed per hotel partner.
  • For hotel stays, member must select WorldPerks miles at time of check-in to earn Bonus Miles for each qualifying stay.
  • Members must choose WorldPerks miles as their preferred earning alliance in hotel programs that require membership to earn miles.
  • Multiple Qualifying Activities can be earned for multiple qualifying hotel stays.
  • To view individual hotel mileage award structures, visit nwa.com/worldperks/earn.

• Cruises
  • Book and purchase a cruise from Cruise Locators. WorldPerks number must be provided at time of booking.
  • Multiple Qualifying Activities can be earned per booked and purchased cruise.

• WorldPerks Buy & Gift Miles
  • WorldPerks Buy & Gift Miles requires a minimum purchase of 2,500 miles per transaction.
  • Multiple Qualifying Activities are allowed on purchases for both Buy & Gift Miles and Transfer Miles

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500 BONUS MILE OPPORTUNITIES:

• WorldPerks Mall^® Retail Partners (see mileage partner list below)
  • Multiple Qualifying Activities can be earned per WorldPerks Mall retailer.
  • Minimum purchase of $50 (excluding tax and shipping) purchase required. Qualifying Activities are only awarded for online purchases through the WorldPerks Mall at www.nwa.com/mall.
  • The transaction date on merchandise purchased will be the date that the item is shipped and your credit card is charged. This date must be within the Promotional Period: March 1 to May 31, 2007.
  • WorldPerks is not responsible for orders with split shipping dates.
  • To ensure you receive credit for your transactions, Northwest Airlines recommends making your WorldPerks Mall purchases early in the promotional period.
  • Bonus Miles will not be awarded for purchase of gift certificates at WorldPerks Mall merchants unless specifically stated at the merchant offer page on the WorldPerks Mall.
  • Purchases from Netflix, Gamefly and Guthy-Renker do not qualify for this promotion.

• Car Rentals (see mileage partner list below)
  • Each qualifying car rental counts as 1 Qualifying Activity.
  • WorldPerks number must be given at time of rental or reservation to receive WorldPerks miles and be considered a qualifying activity.
  • Multiple Qualifying Activities can be earned for multiple car rentals.
  • Renter must meet standard age, driver and credit requirements. Rates are higher for drivers under the age of 25.
  • Standard restrictions apply.
  • Alamo, Dollar, National and Thrifty collect a Frequent Flyer Tax Recovery surcharge to cover the federal tax on the cost of the miles award at time of rental.

• Flowers (see mileage partner list below)
  • Flower Mileage Partners requires a minimum purchase of $50 in one transaction (excluding tax and shipping).
  • Multiple Qualifying Activities are allowed per flower partner.

• Dining
  • Spend a minimum of $50 at a participating restaurant in the Rewards Network Dining For Miles program.
  • Multiple Qualifying Activities are allowed with the Rewards Network Dining For Miles program.

• Wine Club
  • Purchase a new wine club membership from Vinesse Wine Clubs. Purchase must be made at www.vinesse.com/nwa.
  • Vinesse Wine Shop (single bottle sales) requires a minimum $50 purchase in one transaction (exluding tax and shipping) to count as a Qualifying Activity.
  • Qualifying Activities are only awarded for online purchases through the
    Vinesse Wine Shop. The transaction date on merchandise purchased will be the date that the item is shipped and your credit card is charged. This date must be within the Promotional Period.
  • To ensure you receive credit for your transactions, Northwest Airlines recommends making your Vinesse purchases early in the Promotional Period.
  • Multiple Qualifying Activities are allowed per new wine club memberships.
  • Multiple Qualifying Activities are allowed per each each $50 purchase from Vinesse Wine Shop.

• WorldPerks Transfer Miles
  • WorldPerks Transfer Miles requires a minimum purchase of 5,000 Transfer Miles per transaction.
  • Multiple Qualifying Activities are allowed with Transfer Miles.

• SkyMall
  • A minimum SkyMall purchase of $50 for one transaction (excluding tax and shipping) to count as a Qualifying Activity.
  • Qualifying Activities are only awarded for online purchases through SkyMall at www.skymall.com/nwa
  • The transaction date on merchandise purchased will be the date that the item is shipped and your credit card is charged. This date must be within the Promotional Period.
  • To ensure you receive credit for your transactions, Northwest Airlines recommends making your SkyMall purchases early in the promotional period.
  • Multiple Qualifying Activities are allowed per each $50 purchase from SkyMall

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MILEAGE POSTING :

• A maximum of 50,000 Bonus Miles per WorldPerks account will be awarded for this promotion. A maximum of 25,000 Bonus Miles per WorldPerks account will be awarded for existing WorldPerks Visa Cardmembers, unless the WorldPerks member applies, is approved, and uses or pays the annual fee for a WorldPerks Visa Signature, Platinum, or Business Card that is a different product than what they currently have.
• Please allow 6-8 weeks for WorldPerks miles to post to your WorldPerks account. Northwest is not responsible for Mileage Partners' posting delays.
• All participating partner program terms and conditions apply.
• Northwest reserves the right to add, delete or modify the participating partner listing with or without notification. Northwest is not responsible for any malfunctions associated with web registration process that result in late registration or incomplete information.
• Northwest is the final authority on all disputes. All disputes should be sent in writing to the WorldPerks Service Center:

WorldPerks Service Center
601 Oak Street
Chisholm, MN 55719-1995

• Other restrictions may apply.

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• WorldPerks Visa^® Personal Cards (Platinum or Signature)

• WorldPerks Visa^® Business Card

• LendingTree

• Home Loan Center

• WhiteTie^®

• WorldPerks^® Wireless

• EarthLink^®

• Cruise Locators

• Country Inns & Suites^®
• Park Inn^®
• Park Plaza^®

• Radisson Hotels & Resorts^®
• Regent International Hotels

• Clarion^®
• Comfort Inn^®
• Comfort Suites^®
• Econo Lodge^®

• MainStay Suites^®
• Quality^®
• Rodeway Inn^®
• Sleep Inn^®

• Coral by Hilton
• Doubletree^®
• Embassy Suites Hotels^®
• Hampton Inn^®
• Hampton Inn & Suites^®

• Hilton Garden Inn^®
• Hilton Grand Vacation Club^®
• Homewood Suites by Hilton^®
• Scandic
• Waldorf-Astoria Collection^TM

• AmeriSuites^®
• Hyatt Hotels and Resorts^®

• Hawthorn Suites
• Summerfield Suites

• Nikko Hotels International

• Hotel JAL City

• Courtyard^® by Marriott^®
• Fairfield Inn^® by Marriott^®
• JW Marriott Hotels & Resorts^®
• Marriott^® Hotels & Suites^®
• Marriott Vacation Club^SM International

• Renaissance^® Hotels & Resorts
• Residence Inn^® by Marriott^®
• SpringHill Suites^® by Marriott^®
• TownePlace Suites^® by Marriott^®

• Okura Hotels & Resorts

• Okura Frontier Hotels

• Pan Pacific Hotels and Resorts
• Tokyu Hotels and Resorts

• Tokyu Inns
• Excel Tokyu

• Shangri-La Hotels and Resorts

• Traders Hotels

• InterContinental^® Hotels & Resorts
• Candlewood Suites^®
• Crowne Plaza^® Hotels & Resorts

• Holiday Inn^® Hotels & Resorts
• Holiday Inn Express^®
• Indigo Hotels
• Staybridge Suites^® by Holiday Inn^®

• Westin^® Hotels & Resorts
• Sheraton^® Hotels & Resorts
• Four Points^® by Sheraton
• Le Meridien

• St. Regis^®
• The Luxury Collection^®
• W Hotels^®

• Alamo^® Rent a Car
• Dollar Rent a Car

• National Car Rental^®
• Thrifty Car Rental

• Calyx & Corolla
• FTD.com

• Teleflora's Flower Club

• Vinesse Wine Shop
• Vinesse Wine Clubs

• Rewards Network^SM Dining For Miles^®

• Buy & Gift Miles

• Transfer Miles

• SkyMall^®
• WorldPerks Mall

Additional WorldPerks merchants may be added during the promotional period.
(Purchases from Netflix, Gamefly, and Guthy-Renker do not qualify)

• Ann Taylor
• Ann Taylor Loft
• Banana Republic
• Boden
• Boston Proper
• Brooks Brothers
• Chadwicks
• Charles Tyrwhitt
• Coldwater Creek
  

• Eddie Bauer
• Eddie Bauer Outlet
• Figleaves
• Gap
• Jos. A Banks
• Lands' End
• Lane Bryant
• Lerner
• Old Navy

• Broderbund
• Discovery Store
• eHarlequin
• iTunes
• Magazines.com
  

• Musician's Friend
• Rosetta Stone
• Sony Music Store
• Time Life
• Wall Street Journal

• Franklin Covey
• Office Depot

• Office Max
• Staples

• Apple
• Best Buy
• Bose
• Cambridge Soundworks
• Circuit City
• CompUSA
• Dell
• Gateway
  

• HP
• J&R Electronics
• McAfee
• Radio Shack
• Ritz Camera
• Sony
• Tiger Direct

• Apple
• Babies-R-Us
• Bloomingdales
• Blue Fly
• eLuxury
• JC Penney
• Magellans
• Montgomery Wards
• Neiman Marcus
  

• Nordstrom
• Overstock.com
• Saks Fifth Avenue
• Sears
• ShopNBC
• Spiegel
• Target
• The Sharper Image

• A la Zing
• Appetizerstogo.com
• Chef's
• Cheryl & Co.
• Cooking.com
• Dale & Thomas
• Gevalia
• Harry & David
  

• Hickory Farms
• iGourmet
• Lobstergram
• Mrs. Fields
• Nirvana Chocolates
• Omaha Steaks
• Stonewall Kitchen
• Tupperware

• Avon
• Beauty.com
• Diamond.com
• Drugstore.com
• eBags
• Fossil
• H2O Plus
  

• Lancome
• Perfumania
• Ross Simons
• Sephora
• Shoebuy.com
• The Walking Company
• Vision Direct

• 1-800-PetMeds
• Art Gazebo
• Baby Universe
• Bombay
• Brookstone
• Gardener's Supply
• Hammacher Schlemmer
• Home Depot
  

• Horchow
• Linenplace
• Linens-N-Things
• Petsmart
• Plow & Hearth
• Restoration Hardware
• Smith & Hawken
• Smith + Noble

• Adidas
• Bass Pro
• Cabela's
• Dick's Sporting Goods
• ESPN
• Footlocker
• Gaiam
• GigaGolf
  

• JC Whitney
• Kodak EasyShare Gallery
• REI
• Shutterfly
• Sierra Trading Post
• TicketsNow.com
• Woodwind & Brasswind