It's a non-intrusive extension that really helps. It's completely community-sourced, so if someone writes a bad review for a website, it impacts the rating for the website they gave the review. For instance, let's say person x found a phishing website. They could go under the extension, and write a review for it, in the meantime clicking "Phishing" during the review process. Then, anyone else who goes to that site, will be warned that it's a phishing website.