TripIt PPID Personalized Ad Choices
TripIt uses identifiers called Publisher Provided Identifiers ("PPIDs") for some of our personalized ads and content. PPIDs allow us to use a consistent identifier representing you across different devices from which you use and access Tracked Sites. This helps us better tailor ads and content to your interests and helps keep us from showing you the same ads too many times even as you switch devices used to access TripIt.
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