Good

I like and appreciate the years and years of community build up. While people are generally dumb there is a certain wisdom in large/innumerable groups. That adds that extra little something to determine if a site is safe, trustworthy or not, etc.

Has saved me from malicious websites before

I have found WOT to be very helpful in warning me about several unsafe websites. Thanks so much.

While the service this extension provides is indeed very helpful, the extension itself is in dire need of updating. Right now, it slows down Firefox substantially and hangs it up. I have stopped installing it on client's computers and will not be recommending it until this is remedied.