I love the add-on but scammers use this tool to, according to machintruc comment.
When you look at some website only 2-3 votes with account that have only 1 voted website (the scammer's website). So be careful to look at vote correctly before trust new user.
This is wonderful-beware however, some sites pay so that their reputation looks good and users cannot put actual input...
Don't believe me? Check Yelp. That site should not be in green.
That's not true. Users determine all reputations and it's not possible to buy a good reputation:
Yelp's reputation is also based on user ratings and you can have your say by rating the site yourself. You may want to learn more about the difference between ratings and comments:
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.