They are certainly allowed to according to their TOS: https://www.google.com/analytics/terms/us.html https://www.google.com/analytics/terms/us.html "Google and

They are certainly allowed to according to their TOS: https://www.google.com/analytics/terms/us.html https://www.google.com/analytics/terms/us.html "Google and its wholly owned subsidiaries may retain and use, subject to the terms of its privacy policy (located at https://www.google.com/policies/privacy/ https://www.google.com/policies/privacy/), information collected in Your use of the Service" Also read: https://www.google.com/policies/privacy/partners/ https://www.google.com/policies/privacy/partners/