Powered by Commission Junction, TripAdvisor's affiliate program pays a 50% commission off the revenue generated from a user clicking on links and/or ads that send them to a TripAdvisor partner site. Which means, unlike most other affiliate programs in this list, you don't have to wait for your referral to make a purchase to earn your commission. As soon as someone comes from your website and clicks on one of the ads or links on the TripAdvisor website, you get paid.
Wirecutter's affiliate program might make you doubt the legitimacy of Wirecutter's recommendations -- but, in fact, it's quite the opposite. Wirecutter only makes commission when a reader purchases a product from an affiliate retailer and doesn't return the product. Wirecutter, then, has no incentive to promote inferior products -- if they did, they'd make less money and turn away readers.