本期内容：

WhatsApp scrapped its subscription fee. The messaging app, bought by Facebook for $22 billion in 2014, has until now cost 99 cents a year (after a free first 12 months). Jan Koum, the founder, said WhatsApp would seek to make money by allowing businesses to communicate with its users—but insisted it would not take third-party advertising or permit spam.

词义解析:

Scrap：取消
Subscription fee：订阅费用
Spam：垃圾邮件