Works as described, doesn't create issues with browsing, provides useful information as a backup to using your brain to evaluate what you read. This add-on is usable right out of the box without the need to fiddle around setting it up. I especially like that it will show the ratings on links as well as on pages. This add-on does not block anything or prevent you from viewing any link or page, it simply gives you another data point to use when you evaluate a link or page for reliability. More info is always good!