"the Internet Chess Club was integral in my leap to tournament-level strength and has been invaluable in my continued development as a chessplayer." — Matthew Herman (former top-rated U.S. junior in blitz)
It's considered rude to "kibitz" during a serious game, unless both players
have agreed that it's okay. ICC has an "allowkib" variable that allows
you to choose whether your games should allow kibitzes.
"set allowkib 0" = No kibitzing. *All kibitzes will be automatically
converted to whispers by the server.
"set allowkib 1" = Allow kibitzes.
"set allowkib 2" = Allow kibitzes in unrated games only.