In Effort to Be Transparent, TripAdvisor Releases Its First Report Detailing Fake Review Volumes

TripAdvisor®, the travel platform trusted by millions of consumers worldwide for its traveler reviews, has today published its first-ever Review Transparency Report, revealing never-before-shared details about its review moderation processes, as well as statistical data on the volume of fake review attempts targeted at the platform in 2018.

The report, which analyzed a full year's worth of data on reviews submitted by the global travel community, revealed the overall volume of reviews submitted to TripAdvisor in 2018. It details the multi-layered approach TripAdvisor takes to ensure reviews posted on its pages comply with the site's guidelines. The report also provides a detailed breakdown of the proportion of reviews that were either blocked or removed.

"Ensuring that TripAdvisor is a trusted platform for our users and listed businesses is a top priority. We've continued to make advancements to our industry-leading fraud detection efforts in recent years, but it's a daily battle and we are far from complacent," said Becky Foley, senior director of trust & safety at TripAdvisor. "While we are winning the fight against fake reviews on TripAdvisor, we can only protect our corner of the Internet. As long as other review platforms aren't taking aggressive action, then fraudsters will continue to exploit and extort small businesses for cash. It is time other platforms like Google and Facebook stepped up to the plate to join us in tackling this problem head on."

Key report findings at a glance

• 66 million reviews were submitted to TripAdvisor in 2018 by the global travel community. Each one was analyzed using advanced fraud detection technology, and 2.7 million were subject to additional human assessment by content moderators.
• 4.7% of all review submissions were rejected or removed by either TripAdvisor's advanced analysis technology or manually by the content moderation team. There are a number of reasons why TripAdvisor rejects or removes reviews, ranging from guideline violations to instances of review fraud.
• Only a small fraction of all review submissions — 2.1% — were determined to be fraudulent, and the vast majority of those (73%) were blocked before they were ever posted.
• This equated to over 1 million fake reviews that were prevented from being displayed on TripAdvisor.
• Fewer than 1% of reviews were flagged by users or businesses for potentially violating TripAdvisor guidelines. TripAdvisor's content moderation team reviewed most of these community reports within six hours of them being submitted.
• 34,643 businesses were subject to a ranking penalty, which is a reduction of a property's position within the popularity or traveler ranking. Ranking penalties are applied when a business is caught attempting to post fake reviews.

The report also described TripAdvisor's efforts to catch paid reviewers. Paid reviewers are individuals or companies that try to sell "user" reviews to businesses listed on the site. Since 2015, TripAdvisor has stopped the activity of more than 75 websites that were caught trying to sell reviewsⁱ, including one individual who was sentenced to nine months in prison by the Criminal Court of Lecce in Italy last year.

"Consumer reviews have become essential to millions of tourism activities around the world. It is progress, provided that, as recently recommended by the World Committee on Tourism Ethics, these reviews are reliable and unbiased," said Pascal Lamy, chairman of the World Committee on Tourism Ethics at the UNWTO (World Tourism Organization). "It is therefore encouraging to see that platforms such as TripAdvisor are committed to transparency on how they monitor, control and manage the reviews they receive in order to avoid abuses and frauds."

In addition to the release of moderation data for the first time, the 2019 Review Transparency Report highlighted a number of commitments TripAdvisor is making to protect the integrity of reviews on its platform, including:

• Continuing to improve systems to identify fraud and penalize the perpetrators
• Further investing in training for human moderation teams
• Pursuing partnerships with law enforcement authorities to support their efforts to tackle fake online reviews
• Building on transparency efforts by sharing more insights into TripAdvisor moderation processes and fraud investigations on the TripAdvisor Insights blog

The 2019 TripAdvisor Review Transparency report can be downloaded in full from this link: https://www.tripadvisor.com/TripAdvisorInsights/w5144

ⁱ Figures cited refer to the period January 1, 2015 through December 31, 2018