After cannibalizing the hardware businesses – may it be phones, laptops or network equipment – the Chinese Internet outfits are breathing on their western counterparts’ neck. Alibaba has greater reach than Amazon: Chinese are happier to buy online than Americans. Ecommerce accounts for about one-tenth of all retail sales in China compared with about 7 per cent in the US. Tencent’s WeChat messaging and calling app has more than 650m active monthly users and is catching up rapidly with Facebook’s WhatsApp, which has just passed the billion-user mark. Facebook is blocked in China, which has allowed microblogging website Sina Weibo to amass more than half a million users who not only post but use Weibo as a social media site similar to Twitter.