Insight™ addon does not collect any personal identifiable data about its users.

However, while visiting websites with this extension installed,

(a) The host-name of the visited sites (ONLY the host-name and NO other information or personal identifiable data) is sent to Google Safe-Browsing website in the form of: "https://www.google.com/safebrowsing/diagnostic?site=visited-host-name" to get safe browsing data from Google. To read more about Google Privacy please follow this link.

(b) Moreover, all host-names (ONLY the host-names and NO other information or personal identifiable data) are sent to Amazon Alexa in the form of: "http://data.alexa.com/data?cli=10&url=visited-host-name" to get site-rank and other site-info. To read more about Amazon Privacy please follow this link.

Beside the above websites (Google Safe-Browsing and Amazon Alexa), no other information is sent to anywhere with this Addon.