The Electronic Frontier Foundation (EFF) has a tool called
Cover Your Tracks that will analyze your browser and add-ons to see how well you are protected against online tracking techniques. It also checks to see if your system is uniquely configured (therefore identifiable) even if you are using privacy protection software. The report is quite comprehensive and includes informative links.
Not directly related to the above, but of interest to those of us who are DuckDuckGo users, the EFF has
partnered with Duck to enhance secure browsing and protect user information on the Web.
