| Kaneesha | Kanetix | Karmaloop |
| Kaspersky Lab - Antivirus Software | Keen - Psychics & Astrologers | KitchenAid |
| Kodak | Kodak EasyShare Gallery | Kosher.com |
| Quality Health | Quality Inn | Quality Paperback Book Club |
| QuickBooks | Quicken Loans | Quicken Software |
| Quill | Qwest High-Speed Internet |
| uBid.com | Uncommon USA Flagpoles and Flags | Under Armour |
| United Shades | Upromise | US Olympic Shop |
| US SEARCH | USA Today |
| X10.com | XM Satellite Radio |
| Yahoo! Autos | Yahoo! Games | Yahoo! hotjobs - Post A Job |
| Yahoo! Music Unlimited | Yahoo! Personals | Yahoo! Search Marketing |
| Yahoo! Web Hosting | Yardiac.com Garden Store | Yoga Accessories |
| YOOX | Yves Rocher USA |
| Zales, The Diamond Store | Zappos.com | zChocolat.com |
| Zinio.com Digital Magazines! | Zirh - Gift Certificates | Zirh - Men's Skin Care |
| Zooba.com | ZooBooks |