From now on, any service that accesses Google's Contacts API - which makes it easy to import your list of friends' and coworkers' email addresses into another service - will need to offer reciprocity.

从现在开始，任何服务如果要访问Google联系人api——借助这个API，将朋友和同事的电子邮件导入第三方服务变得很容易——将会需要为Google提供互惠措施。