Keep in mind that it doesn't show up the icons at all if you're using a content blocker and activated Fanboy’s Annoyance List.
This is because the critical resource is named "/socialmedia-leak/socialmedia-leak.js".
This is because the critical resource is named "/socialmedia-leak/socialmedia-leak.js".
Disabling 3rd-party cookies in your browser is what protects people against Social Media Fingerprinting.
I always advise to disable 3rd-party cookies -- unfortunately this is not enabled by default in browsers. Even without this Social Media Fingerprinting issue, anyone looking at cookie payload (which also include local and session storage) on common top sites will be horrified at the result of not blocking 3rd-party cookies.
I found it's quite rare to find a site broken because 3rd-party cookies are blocked.
https://github.com/easylist/easylist/commit/d39f815c794a89e4...
It's not very complete, though.