Original Link: http://mobile.nytimes.com/2014/02/15/technology/the-plus-in-google-plus-its-mostly-for-google.html

Claire Cain Miller, writing for the NYT:

The value of Plus has only increased in the last year, as search advertising, Google’s main source of profits, has slowed. At the same time, advertising based on the kind of information gleaned from what people talk about, do and share online, rather than simply what they search for, has become more important.