One important feature we use in Google Analytics that should be mentioned is the Demographics and Interest Reporting, which sets a third party cookie on visitors’ browsers in order to target them with Advertising on the Google Distributed Network. You can read more about the feature in the help center.
Here are useful links if you would like to be removed from our Google Analytics tracking:
Opt-out of Google Analytics for Display Advertising and customize Google Display Network ads using the Ads Preferences Manager
Google Analytics opt-out browser add-on We collect anonymous information both directly and via use of third party services such as Google Analytics and based on Display Advertising (e.g., Remarketing, Google Display Network Impression Reporting, the DoubleClick Campaign Manager integration, or Google Analytics Demographics and Interest Reporting)