LinkExtend is a Firefox add-on that provides you with extensive information about each website you visit.
The extension is displayed as an extra toolbar that may take up a little room in your browser, but offers loads of information in exchange for it. You'll be able to check the website's rating in computer security, kid's safety, ethics and other criteria, as well as see the website's PageRank and SiteTraffic rankings.
LinkExtend features also other extra utilities with which to search the Web for specific content, find similar sites to the one you're currently browsing, search Wikipedia for more information about it and even see previous versions of it thanks to the Wayback Machine website.
The add-on's configuration settings let you tweak the toolbar's behavior in different ways, from selecting which buttons you want to display to choosing the target (current tab, new tab, new window) where clicked links should open.
LinkExtend provides you with highly detailed information about each website you visit with Firefox.
