Facebook (NASDAQ: FB) recently partnered with Activision Blizzard (NASDAQ: ATVI) to stream Overwatch, Hearthstone: Heroes of Warcraft, and World of Warcraft game sessions to Facebook Live. Gamers who click the “Go Live” button in each title will be able to post live feeds directly to their timelines. Gamers will also be able to log in to Blizzard games with their Facebook accounts instead of Blizzard’s Battle.net system.