American marketplace Amazon has published its results for the fourth quarter of 2018. In Q4, sales are up 20%, to $72.4 billion. A massive growth can be seen for Amazon Advertising - over the year 2018, net sales increased 31% ($232.9 billion). Net income increased to $10.1 billion, compared with net income of $3.0 billion in 2017. For the first quarter of 2019, Amazon expects