"Lexical Darknet"

My clever friend hep just told me something interesting that I didn't know.

on irc to hide channels, we often make channels after patching our unicode so you can do things like katakana and cyrillic letters. then most irc clients can't even read the chans if they are unpatched (tho modern GUIs often can). some people even patch their ircs to read color codes so that you could join a channel named a block of colored text.