I think this should only be applicable to sites where you are logged in, as otherwise its going to be pretty difficult for them to identify using your name.
"Your browser fingerprint appears to be unique among the 5,053,325 tested so far."
"Web browsers leave an essentially unique footprint every time you visit a web page, even in Incognito mode (and even without supercookies). This is well established; many web tools such as Panopticlick will confirm that you give a website lots of information about your computer every time you visit."
Step 1: Open an incognito window and watch some british milfs getting creampied by black dudes.
Step 2: go to cuteoverload.com and tweet the URL of some snuggly G-rated kittens.
I've now fingerprinted you across both xhamster and cuteoverload.
Additionally, once you tweeted something on cuteoverload, I just learned the the tweet_id of something attached to your twitter handle, which I tied to your browser fingerprint. Provided the tweet is public I can then get any personal info you make public in your twitter profile.
Pretty straightforward docs on how to do it: https://dev.twitter.com/web/tweet-button https://dev.twitter.com/web/javascript/events
I believe facebook offers similar data via the api (not sure if it includes your id), never tried to do it with pinterest.
I only need you to engage in one of many non-obviously trackable social interactions ("YES send me a cute kitten every day to my email!") on kittens.com to identify you.