Hacker News on 28 December 2017

• A Message to Our Customers about iPhone Batteries and Performance
• Effective Engineer – Notes
• Economics of Minecraft
• How I Find Consulting Clients
• High Sierra macOS freezing and stops
• The lucrative business of America’s opioid crisis
• Exmo Bitcoin exchange chief executive kidnapped in Kiev
• Many major websites are taking silent anti-ad-blocking measures
• Building a Distributed Log from Scratch: Data Replication
• Concussion doctor says he found CTE in living NFL player