Dark social
Also called private sharing, dark traffic
What is dark social?
Dark social is the sharing of content through private channels that analytics tools cannot easily trace, such as direct messages, WhatsApp, Messenger, text messages, Slack and email. When someone copies a link and sends it to a friend, the resulting visit often shows up in analytics as direct traffic with no clear source.
The term was coined in the early 2010s, and the trend has grown since as more sharing moved from public feeds to private messages. Platforms now show some of this activity inside their own analytics, for example as shares or sends of a post, but where those shares lead is often invisible.
Dark social is not secret or harmful. It is simply word of mouth that happens out of sight, and it is often the most trusted kind, because people send things to friends they know will care.
Why dark social matters
If you only count what you can track, you may undervalue social media. Many customers discover a brand when a friend sends them a post, then visit later by typing the URL or searching your name.
Knowing this changes what you make. Content people want to send privately, such as useful tips, funny moments and things a friend needs, can drive more business than content that only collects likes.
How to measure dark social
- Watch post shares and sends in each platform's analytics.
- Add tracking parameters to links you share so some private shares keep their source.
- Ask new customers how they heard about you, with an option like A friend sent it to me.
- Look at spikes in direct traffic and branded search after a post performs well.
Dark social FAQ
Why is it called dark social?
Because the sharing happens in private channels that are dark to analytics: you cannot see who shared, where or with whom.
Can you track dark social?
Partly. Platform share counts, tagged links and asking customers how they found you all help, but some private sharing will always be invisible.
Related terms
Social listening is tracking what people say online about your brand, competitors and industry, then using it to improve products and content.
Engagement is how people interact with a post: likes, comments, shares, saves, replies and clicks. It shows content is landing, not just being seen.
Organic reach is the number of unique people who see your content without paid promotion, through feeds, search, shares and recommendations.
A social media audit reviews every social profile, its content and its results to see what works, what does not and what to change.
Brand awareness is how familiar your target audience is with your brand: whether they know it exists and can recall or recognize it.