Wary of fake online reviews? Based on research at Cornell University, Review Skeptic uses linguistic features to spot fake reviews with nearly 90% accuracy. Install the Review Skeptic bookmark app below to classify reviews as real or suspect. Learn how it works at the Cornell Chronicle and The New York Times.

1. Drag the icon above to your bookmarks toolbar. You may first need to make the toolbar visible in your browser.

2. Go to TripAdvisor.com and find a hotel reviews page.

3. Click the "Review Skeptic" bookmark on each new page and watch it automatically classify each review as real or suspect.

Note: Review Skeptic works best on English hotel reviews. Reported accuracy is based on results from a controlled experiment; please see the related research paper for specifics. This service is offered for entertainment purposes only.