Facebook Debuts Product Changes to Address Privacy Concerns

Facebook debuted an overhaul of its core social network, taking its first concrete steps to refashion itself into a private messaging and e-commerce company as it tries to move past a stream of scandals while tapping new revenue sources. Chief Executive Mark Zuckerberg unveiled a fresh design for the world’s biggest social network that de-emphasized its News Feed and showcased its messaging app, online marketplace and video-on-demand site.