WOT as internet security

some people use the internet to search for articles or site address using a search engine. But we must know that the results displayed by search engines do not necessarily address that is safe to visit.Who knows one of these sites contain spyware, adware and viruses.

One way to reduce the risk of this is to install WoT (Web of Trust).
Wot is a free internet security that can be add-on for firefox browser, it will warn us before interacting with a site.

when we find a site through search engines.
Site search results in a safe marked blue circle and sites suspected a virus or trojan marked with a red circle.

this program can work with anti-virus program I have install on my computer