HQ, the live trivia game that is now seeing up to 2 million players per game, is introducing some new social features, including answer sharing with friends. The company has been testing this feature across a small group of users already, but on Friday the feature will roll out to all HQ users. Here’s how it works: Users can connect their address book to HQ and add their friends. Once they have added friends, they can see which of their friends are playing the game alongside them.