Are you identifiable is a new web service that answers whether Internet sites may identify you based on your extensions, logins, and web browser.
Online privacy is a hot topic, and making sure that you you are not tracked or traced online may soon require a master's degree in privacy.
New technologies, the rise of HTML5 and all that came with it for instance, added new capabilities. As is the case with these things usually, they can be used for good and bad.
It is no longer enough to use a VPN, or a content blocker to keep some of your privacy while you are on the Internet. You also need to know and deal with new technologies such as WebRTC or intermediate CA caching, to avoid leaks or browser fingerprinting scripts.