ISP blocked due to abuse?

Well, it seems today that I'm now unable to post anything over at the 4chan imageboards, otherwise I get this message:
"Posting from your ISP has been blocked due to abuse. [More Info]"
I can still browse the site, all the images and threads load fine, I just can't post. What gives? I've never posted spam or porn.

>>896
At this rate every ISP will be blocked
Except grorious murrikah, those being the only ones he cares about. So long they share their SUFAHNNEY4CHINZXD stories in Facebook and attempt to greentext in various other forums/whatever despite said places having their own perfectly functional quoting features, he couldn't give less of a shit. I mean, he's already a gay hipster pseudo-celebrity, why should he?