"We may "sell" or "share" the following categories of personal information to business partners, social media websites, advertising networks, data aggregators, and other third parties identified in Section 3 of this Statement for purposes of delivering interest-based advertising, analyzing use of our websites and apps, and enhancing user engagement on our websites and apps and on social media: biographical information/identifiers, Internet or other electronic network activity information, commercial information, and inferences drawn from the above."
Viator openly acknowledges selling and sharing multiple categories of personal information — including identifiers, browsing activity, purchase history, and inferred profiles — to advertising networks, data aggregators, and other third parties for targeted advertising purposes.