Plumb
C+

Travel and restaurant reviews

TripAdvisor

Tripadvisor, Inc. (publicly traded, NASDAQ: TRIP; spun off from Expedia in 2011)

Crowd reviews Free to read Visit TripAdvisor ↗

Anyone can post without visiting; ~9% of 2024 reviews were caught fake, and hotels buy the slots above.

What it's really for An open travel-review site; anyone can post, and listed businesses pay for the placement above.

What our grade covers The grade on this page is about its open user reviews and 'Popularity Ranking', not everything the site does.

High Scoring Confidence Checked against primary sources. We are confident in the facts and the grade here.

Follow the money

Hotels and restaurants are who pay TripAdvisor most (CPC ads, booking commissions, and Business Advantage subscriptions/Sponsored Placements); the company states paying has "absolutely no impact" on the organic Popularity Ranking, but paying buys Sponsored Placement ads that appear above search results and on competitors' pages, so money buys visibility even if not the underlying rank.

Source →
Operating since
2000 (26 years) · source
What it costs you
Free to read The reviews are free to read.
How they make money
It makes money from the businesses it lists, via cost-per-click hotel/metasearch ads, commissions on bookings, experiences and dining reservations, and business subscriptions (Business Advantage) plus paid Sponsored Placements ads.
What they do
It hosts open, unverified user reviews and ratings of hotels, restaurants and attractions and ranks each against local competitors using a "Popularity Ranking" based on review quality, recency and quantity.
What to watch for
Anyone can post a review without proving they ever visited, so the rankings are gameable and roughly 8.7% of 2024 submissions were caught as fake (mostly businesses boosting themselves) and paid hotels can buy ad slots that sit above the "real" rankings.
Composite score
2.80 / 5.00 → grade C+

How the grade was reached

Independence · 30% weight 2 / 5

Does the site take money from the very entities it ranks? Pay-for-placement, vendor-funded data, and affiliate commissions all pull this down. The less the ranking can be bought, the higher the score.

Evidence basis · 30% weight 3 / 5

What is the ranking actually built on? Hands-on testing scores highest, then verified first-hand reviews, then opinion or popularity surveys and self-reported figures, then pay-to-rank, which scores lowest.

Method transparency · 20% weight 4 / 5

Is the methodology published, specific, and reproducible? Can a reader see how a given rank was reached, or is it a black box?

Conflict disclosure · 10% weight 3 / 5

Are commercial relationships, sponsorships, and affiliate arrangements disclosed clearly and near the rankings themselves, rather than buried?

Manipulation resistance · 10% weight 2 / 5

How hard is it to game? Controls against fake reviews, solicited reviews, and vendor gaming raise this; an open box anyone can stuff lowers it.

Evidence

Compare with others

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