I love this useful website! It's well designed, and the addon is useful, and it stays out of the way! I love how the notifications are noticeable, but not annoying, and I also absolutely love the icon it leaves by links so you know the rating before you click a link!
WOT is a free website reputation, rating and review tool that helps find trustworthy websites and protects against online scams, untrustworthy links, and unreliable web stores. Free add-on for Firefox, IE, Chrome, Opera and Safari browsers.