Cardholders get three benefits in total from linking their card with TripAdvisor, American Express execs said in an interview. First, any reviews they write will be labeled as being from a Cardmember if they have used their AmEx card to pay for something at the hotel or restaurant they are reviewing. Perhaps this will be attractive to a small segment of reviewers, but there’s probably more value in this for readers of reviews who can trust that these labeled opinions come from real people who have actually visited an establishment. Cardholders will also be able to view custom lists of popular destinations based on aggregate spend from American Express cardholders. The main attraction for AmEx card members, though, will likely be deals from businesses on TripAdvisor that can be loaded into a cardholder’s account by clicking on an offer on - no voucher print-outs needed. Get the full story at AllThingsD