Publishers like WSJ and Buzzfeed are dipping their toes into the notorious “Yo” app to tap into its sizable audience. With its newly added functions of embedded links and hashtags, Yo has become more marketer-friendly, and publishers are among the first to take advantage of it. The one-word-only messaging app attracted a considerable amount of users with its simple, gimmicky concept early on, and marketers always follow where the audience goes.