Re/code: BuzzFeed and iHeartRadio have been added to Snapchat’s list of Discover partners, replacing existing publishers Yahoo and Warner Music. It’s a sign that Snapchat is indeed bringing on publishers that aren’t just looking for a young audience (e.g. Yahoo) but already reach one (e.g. BuzzFeed). It moved the Discover content to a second page within the app earlier this month to help make it more prominent, and bringing on BuzzFeed should also help improve traffic.