IRC
From 25C3 Public Wiki
[edit] #25C3
The channel #25C3 on FreeNode is the channel for *general* talk:
irc://irc.freenode.org/25c3
Enter these commands into an IRC client:
/server irc.freenode.org /join #25C3
There are slso channels for each lecture room:
Room1/Saal1: #25c3-saal1 Room2/Saal2: #25c3-saal2 Room3/Saal3: #25c3-saal3