Considering WOT has been caught many times hoarding our information and their govt being able to exercise control over it if they choose to, coupled with, false rating of some sites, such as some bad sites getting a green light and some good sites getting a red light... and I have reported both cases many months ago to WOT without them taking any action... and also considering that they're not endorsed by Mozilla, I don't trust this add-on and have uninstalled it from my FireFox.