Social media can be a double-edged sword for public figures. Chief Executive John Lee Ka-chiu has just had a taste of that. After making a splash on the mainland China microblogging site Weibo, those running his account caught a whiff that something might have gone wrong as complaints against the stench of a local landfill near the border with Shenzhen flooded in.

A social media lesson for Hong Kong ‘novice’ John Lee comes via ChinaTechNews.com.