Upon browsing through some pages of Channel4 I found some dead links. Since removing them and replacing them with some (working) links would prove beneficial for all of us, I thought we could maybe gather all the dead links we can find ITT. Wether they get removed is something else, but you can always give it a shot. I'll start with some obvious ones:

http://4-ch.net/sexual/ (dead)
http://cgiirc.synirc.net/cgi-bin/cgiirc/irc.cgi?Nickname=Anonymous4chuser&Channel=%234-ch&interface=nonjs (Web Chat)
http://wakaba.c3.cx/soc/kareha.pl/1098886772 (Discussion about Japanese online slang @ The Society for the Study of Modern Image Board Culture, dead board)