What I mean by that is that it passively observes people as they live their lives. It scans the world's blogs and looks at what people are writing, and these people don't know they're being watched or interviewed.
意思是说它被动地观察人们的生活。 它扫描全世界的博客， 看人们写些什么， 而人们不知道有东西在观察他们。