1. The document discusses how more engaging headlines on landing pages can increase clicks. Analyzing data from a landing page with 500k+ daily views, the author found that a 1% increase in a headline's click-through rate resulted in a typical 0.5% increase in the total landing page click-through rate.
2. The rise of mobile traffic and applications has led to more "dark social" traffic where the referrer is not identified. For many domains, dark social accounts for 20-40% of external traffic. However, analyzing traffic patterns shows dark social often correlates with known sources like Reddit. Tracking user agents can also help attribute some dark social traffic.
3. Recent changes by sites like