United Online, Inc. has partnered with Best Buy stores to market voice phone services and the new PrivatePhone service, the company announced Monday. Best Buy stores will distribute CDs for the NetZero Voice Unlimited service at a reduced cost, and for the free PrivatePhone service. PrivatePhone.com was launched in June and offers a free phone number and voicemail allowing a user to protect their privacy. Users can use the number as a way to screen calls rather than giving out a home, work or cellular number. Best Buy was United Online’s first major ritual distributor starting in 2003, said United Online Chairman and Chief Executive Officer Mark Goldston. “This partnership is a perfect fit because like United Online, Best Buy is committed to giving consumers quality products and services at a reasonable price,” Goldston said. Woodland Hills-based United Online is a leading provider of consumer Internet and media services.