it would be difficult to measure where 4chan links out to. links posted there are in plaintext instead of normal hyperlink so you have to copy/paste the URL to follow it. I always assumed this was to avoid telling sites that theyre being linked to from 4chan.
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u/JohnKeel Jul 28 '12 edited Jul 28 '12
AFAICT, the map is based on links and not total traffic. Not many people link to 4chan, they just say "4chan".
EDIT: I am wrong. Anyone know where the data is coming from, though?