This all reflects a trend toward greater clarity in our relations. Facebook and other social tools operate under the covers: Facebook notices which friends you interact with and whose photos you comment on in order to select the items in your NewsFeed or the ads you see.
这都反映出我们人际关系更加清晰化的趋势。Facebook和其他社会工具其实早在暗中运作了：Facebook分析你与哪些好友互动，你对哪些照片作出评论，并针对这些来向你发送特定的新闻源或者广告。但Facebook不会向你提供这些资料，Digital Mirror却可以做到。