Since Twitter announced that they had the intention of going public, they have introduced a number of features aimed at increasing user engagement in the platform. They started by introducing the @MagicRecs which is a system that when you follow, it recommends to you who to follow based on people followed by those you follow. The success of @MagicRecs led them to introduce an Android and iOS feature that alerts users on notification of most discussions popular within the network of those you follow.
Also Twitter had introduced a feature that lets users follow discussions by highlighting conversations by a straight blue line linking handles that are engaged within a conversation. Clicking any of tweet in the conversation opens the entire conversation history to the first person who started the conversation.
To take this a step further, Twitter seems to have introduced an experimental handle @eventparrot that is targeting to DM users of important personalized news. The handle promises to deliver ‘direct messages that help you keep up with what’s happening in the world’.