Free browser plug-in Web of Trust is available for Chrome,
Firefox, Internet Explorer, and Safari. This clever tool vets
search results before you click them, using a traffic- light rating
system (red, yellow, green) to indicate which links are safe, which
you should avoid, and which require caution. And it includes
crowd-sourced ratings, meaning a site’s reputation is based on
other users’ experiences, not some potentially outdated definition
file. (You can add your own ratings as you surf, thought that’s
entirely optional.) Keep in mind, however, that while WOT works
well with browser-based mail services like Gmail and Yahoo, it
won’t help you with mail received in Outlook, Windows Live
Mail, and other desktop clients. For that you should install some
kind of local security software.
Note: This link takes you to the vendor’s site,
which automatically detects whether you’re using Firefox or IE and
offers you the correct version for your browser.