[ev1]

Reddit fingerprints you very aggressively. Cookies are not used here. Every single pageload, they scan all your fonts, plugins, etc.

They also exfiltrate this data back in ways to prevent blocking, by completely randomizing the API endpoint used to submit it and also not use a dedicated endpoint. For example on each pageload it might send to /submit, or /register, or /friend, it'll just pick a random valid endpoint and "front" that

They also continue to do this while you are logged out to tie your IP to the fingerprint.

    hxxps://www.redditstatic.com/reddit-init.en.4-tSxFR4sOk.js

^F "Arial"

Commonly spoofed fingerprints will result in a permanent ban automatically.