Messaging apps like WhatsApp and Facebook Messenger are reinventing social media by prioritizing privacy and intimacy over public sharing. WhatsApp is growing 100 times faster than Twitter and these apps now have more users than Twitter and Instagram combined. Early adopters of messaging apps for brands were media companies looking to engage captive audiences at higher rates and innovate in messaging. As messaging apps continue to evolve, trends include a rise in AI bots and news in a story format, challenges from trolls leading to more moderation, and a focus on private engagement over public sharing.