silverorange/site — pull request #42 by isaacgrant (2013-12-11 15:04:31+00:00)
Title: Add optional support for google display advertising tracking to analytics.

Display advertising lets sites turn on interest and demographic reports as well
as leverage marketing and display network impression tracking.
https://support.google.com/analytics/answer/2444872

This is off by default as it requires privacy policy changes to turn on.
https://support.google.com/analytics/answer/2700409