- M&J Trimming
- macys.com
- Maddie's Closet
- Madison Art Shop
- Madisonavemall.com, Inc.
- Magazine Deals Now
- MagazineDiscountCenter
- Magazineline.com
- Magazines Unlimited
- Magazines.com, Inc.
- Magic Cabin
- MagicWorldOnline
- Magnum Language Systems
- Main Street Seed and Supply
- Make It In Japan
- marketingandsalestools.com
- Marketraise Corp.
- Marqi Nutrition
- MARRIAGE FITNESS WITH MORT FERTEL
- MarshalAuctions.com
- Marty Shoes Inc.
- Match.com
- Matrixreward
- MC Sports
- McAfee, Inc.
- Medical Justice Services, Inc.
- Medifocus.com,Inc.
- MenScience
- Mercantila
- Meritline.com
- MetroPCS, Inc.
- Miaarte Fashion Jewelry
- MiaCom Solutions
- Microsoft - Windows Marketplace
- Midway Auto Supply
- Mikasa
- Miles Kimball Company
- MilitaryClothing.com
- MillionDollarWebTV.com
- Mission Orchards
- MMAWarehouse.com
- Modell's
- Modern Bike
- Modern Office
- momAgenda
- Moments Made
- Mondera.com, Inc.
- MonsterPaysCash
- Monterey Bay Clothing Company (shop the bay.com)
- Montgomery Ward
- Montgomery Ward Kids
- Moon Costumes
- Moped Warehouse
- Morgan Mint
- Morpheus Software
- Morrell Wine
- Mothers Work, Inc.
- Moto Leather
- Motorcycle Superstore, Inc.
- Motormint
- MotoSport, Inc.
- Mountain Gear, Inc.
- Mountains Plus Outdoor Gear
- Mourad Corp
- Movielink, Inc.
- MPI Home Video
- Mrs Cavanaughs Candies, Inc
- Mrs. Fields Gifts, Inc.
- MTV Networks
- Music Wizard Group
- Music123.com
- Musicnotes.com
- MusicSpace.com
- MusicStack
- My Echelon
- My House Appraisal
- My Kids Media, Inc.
- My Wines Direct
- MyCubanStore.com
- myDaVinci.com
- MyFavoriteCity.com Gifts
- Mytwinn.com (eToys Direct, Inc.)
Shopping
- M&J Trimming
- macys.com
- Maddie's Closet
- Madison Art Shop
- Madisonavemall.com, Inc.
- Magazine Deals Now
- MagazineDiscountCenter
- Magazineline.com
- Magazines Unlimited
- Magazines.com, Inc.
- Magic Cabin
- MagicWorldOnline
- Magnum Language Systems
- Main Street Seed and Supply
- Make It In Japan
- marketingandsalestools.com
- Marketraise Corp.
- Marqi Nutrition
- MARRIAGE FITNESS WITH MORT FERTEL
- MarshalAuctions.com
- Marty Shoes Inc.
- Match.com
- Matrixreward
- MC Sports
- McAfee, Inc.
- Medical Justice Services, Inc.
- Medifocus.com,Inc.
- MenScience
- Mercantila
- Meritline.com
- MetroPCS, Inc.
- Miaarte Fashion Jewelry
- MiaCom Solutions
- Microsoft - Windows Marketplace
- Midway Auto Supply
- Mikasa
- Miles Kimball Company
- MilitaryClothing.com
- MillionDollarWebTV.com
- Mission Orchards
- MMAWarehouse.com
- Modell's
- Modern Bike
- Modern Office
- momAgenda
- Moments Made
- Mondera.com, Inc.
- MonsterPaysCash
- Monterey Bay Clothing Company (shop the bay.com)
- Montgomery Ward
- Montgomery Ward Kids
- Moon Costumes
- Moped Warehouse
- Morgan Mint
- Morpheus Software
- Morrell Wine
- Mothers Work, Inc.
- Moto Leather
- Motorcycle Superstore, Inc.
- Motormint
- MotoSport, Inc.
- Mountain Gear, Inc.
- Mountains Plus Outdoor Gear
- Mourad Corp
- Movielink, Inc.
- MPI Home Video
- Mrs Cavanaughs Candies, Inc
- Mrs. Fields Gifts, Inc.
- MTV Networks
- Music Wizard Group
- Music123.com
- Musicnotes.com
- MusicSpace.com
- MusicStack
- My Echelon
- My House Appraisal
- My Kids Media, Inc.
- My Wines Direct
- MyCubanStore.com
- myDaVinci.com
- MyFavoriteCity.com Gifts
- Mytwinn.com (eToys Direct, Inc.)