4chan /b/ doesn't work for me

I don't use that site but my friends told me my real life friend(they recognize her from my myspace) is being ridiculed there.

For some reason the internet is working fine for me but I get an error message every time I try to go there.

This is the link I am using:



This is the error message:
Server not found













Firefox can't find the server at img.4chan.org.








* Check the address for typing errors such as
ww.example.com instead of
http://www.example.com

* If you are unable to load any pages, check your computer's network
connection.

* If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.