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.

>>630

or you guys can try this:
1.) Go to http://qchat.rizon.net/
2.) Fill in a nickname.
3.) Hit connect.
4.) Hit "Ok" when it asks you to register.
5.) Follow the instructions.
6.) Once registered, type /join #4chan in the bar on the bottom of the screen.
7.) Write that you want to appeal your ban and then discuss with the first operator or half-operator that responds. (They'll have either a @ or % to the left of their nickname, respectively.)