As Facebook prepared to release their open graph protocol in 2010, I was the sole designer on a nimble team tasked with enabling Yahoo! News users to have their news reading experience curated by their friends via the Facebook Social Graph.
The project turned out to be a huge success, reaching 27.5 million monthly active users at it's peak.
Work began by quickly sketching the general flow and experience, with the authentication flows receiving a lot of early attention, as the service relied on the user having both a Yahoo! and Facebook account to participate.