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.

Still not working for me. Status isn't saying anything either. Considering the ISP block is concerned with image boards only, should we assume it's image-related? I never posted rule-breaking shit. :(