You didn’t say which browsers and WOT versions are in question.
The latest WOT versions for Firefox and Chrome are safe :

https://addons.mozilla.org/en-US/firefox/addon/wot-safe-browsing-tool/?src=search

https://chrome.google.com/webstore/detail/wot-web-of-trust-website/bhmmomiinigofkjcapegjjndpbikblnp?hl=en-US

WOT for IE is older version and it doesn’t contain tracking code.
Smart scan (Browser Cleanup) doesn’t detect them as bad reputation add-ons.
I guess the question is whether you trust WOT as company or not ?