Source: http://www.pcmag.com/news/349328/web-of-trust-browser-extension-cannot-be-trusted
If you have Web of Trust installed in your browser or on your mobile device, it's time to remove it because they have been spying on their 140 million users.
If you don't know what Web of Trust is, it's a browser extension and android app which will tell you how safe a website is, based off of community ratings.
I used this extension a lot and for me to find this out really did shock me. I've since removed the extension and highly advise others to do so.
More information (Wikipedia): https://en.wikipedia.org/wiki/WOT_Services#Privacy_issues
