For years, social media engagement has been measured through visible actions: likes, comments, shares, saves, and views. But in 2026, one of the most important forms of engagement is becoming increasingly difficult to track. The conversation is moving away from public comments and into private spaces. Comments Are Declining, But Engagement Isn’t Recent social media data points to an interesting shift in user behavior: TikTok comments are down 24% year over year. Instagram comments are down 16% year over year. TikTok shares are up 45%. Instagram shares are up 12%. At first glance, declining comments might look like declining engagement. But that isn’t necessarily what is happening. People are still engaging with content. They’re simply engaging with it differently. Instead of commenting publicly, they might send a post to a friend, share it in a WhatsApp group, forward it to a colleague, drop it into a Slack conversation, or bring it up during a meeting. The conversation hasn’t disappeared. It has moved. Welcome to the Age of Dark Social This behavior is often referred to as dark social: content sharing and conversations that happen through private channels and are difficult for traditional analytics tools to measure. Think about the last time you saw a post and thought: “I need to send this to someone.” You probably didn’t leave a comment saying that. You sent it directly to the person who needed to see it. That private action may not appear clearly in a brand’s engagement report, but it can be far more meaningful than a simple like. A share often carries intent. It means the content was useful, entertaining, relatable, surprising, or relevant enough for someone to pass it along. The New Engagement Question This shift changes the way brands should think about social media performance. Instead of asking only: “How many people commented on this post?” Brands should also ask: “Was this content valuable enough for someone to send it to another person?” That is a different standard for content creation. A post designed to generate comments might ask a simple question. A post designed to be shared gives people a reason to pass it on. It might solve a problem, explain something clearly, capture a relatable experience, provide useful information, or simply make someone think: “This is so you.” What This Means for Brands For marketers, this shift means that traditional engagement metrics should no longer be viewed in isolation. Comments and likes still matter, but they are only part of the picture. Brands should pay closer attention to: Shares: Is the content being passed from person to person? Saves: Is it valuable enough to come back to later? Direct interactions: Are people starting conversations privately? Website traffic: Is social content encouraging people to take the next step? Conversions: Is engagement ultimately contributing to business results? The goal isn’t simply to create content that people see. It’s to create content that people want to do something with. Creating Content Worth Sharing This also has implications for the creative strategy behind social media. The strongest content isn’t always the content that generates the most comments. Sometimes, it’s the post that gets quietly shared dozens, hundreds, or thousands of times. For brands, this means creating more content that is: Useful: Content that solves a problem or answers a question. Relatable: Content that makes people recognize themselves, their colleagues, or their friends. Insightful: Content that teaches people something they didn’t know. Timely: Content that connects with what’s happening right now. Shareable: Content that gives people a reason to send it to someone else. Measuring What You Can’t Always See Dark social creates a challenge for marketers because private sharing is difficult to attribute. A person may discover a brand on Instagram, send the post to a friend on WhatsApp, visit the website later, and eventually become a customer. Traditional analytics may not capture the entire journey. That’s why modern social media strategies need to combine platform metrics with broader indicators such as website analytics, referral traffic, campaign performance, lead generation, and conversions. The objective isn’t to track every single interaction. It’s to understand the impact of the content beyond what is immediately visible. The Future of Social Engagement Social media isn’t becoming less social. It’s becoming more private. As people increasingly communicate through DMs, messaging apps, private communities, and closed groups, brands need to rethink what meaningful engagement looks like. The most valuable interaction might not happen in your comments section at all. It might happen in a WhatsApp conversation between two friends, in a Slack message between colleagues, or in a DM where someone sends your content and says: “You need to see this.” And that may be one of the strongest signals that your content is doing its job. The Softimpact Perspective At Softimpact, we believe effective digital strategies go beyond vanity metrics. The real question isn’t just how many people interacted with your content publicly. It’s what your content made people do next. Because sometimes, the most valuable engagement is the engagement you can’t see.