With Instant Personalization, TripAdvisor can show any logged-in Facebook user which of their friends has indicated that they’ve been to a destination or reviewed something on the site. It pulls data from users’ profiles like hometown, current city, check-ins and Likes, as well as data from the Cities I’ve Visited app. The company also launched an Open Graph-enabled version of Cities I’ve Visited this year and is considering ways it might do the same for the main TripAdvisor site - lafra