Chat Channels
There are a few different types of chat channels on battle.net, each with its own set of rules and characteristics:
Public channels - certain channel names will be designated by battle.net as Public. Public channels contain no Operator*, and will filter profanity out of non-whispered messages. Go here for the basic list of Public channels
Notice that some of the channels on that list are designated as having "root" channel names. Players may use root channel names to create their own public channels. To create a Public Channel, name the channel using a root channel name, then append to the channel name any desired word.
Examples:
Blizzard Chat Test
War2BNE Zoned
StarCraft Big-rumble
Private channels - any created channel that is not designated by battle.net as Public will be a Private channel. Private channels do not filter profanity out of messages.
Clan channels - Clan channels are Private channels. Each Clan channel has a specific Clan Operator. The Clan Operator will always gain Operator status when he enters his Clan channel, and no other account can become Operator unless the channel's current Operator designates him. If a channel’s Clan Operator leaves his channel without designating someone, then the channel will have no Operator until the Clan Operator returns.
To create a Clan channel, use the normal channel creation methods but place the word "clan" at the head of the channel name, then append the name of the account you wish to use as the channel's Clan Operator.
For example: Warblade wants to create a Clan channel where he was the Clan Operator. To do this, he types at the battle.net prompt: /join Clan Warblade
Second example: The clan "DarkPeaches" with clan leader Slobbo-khan{DP} wants a Clan channel. Slobbo-khan{DP} creates a channel with the name "Clan Slobbo-khan{DP}" and he becomes the Clan Operator. If he created the channel "Clan DarkPeaches" he would not be the Operator because his name is not DarkPeaches.
A Clan Operator may, if he wishes, designate an additional Operator for his channel by using the /designate chat command on the desired account then reentering his Clan channel. His designate will become a temporary Operator in the Clan channel for as long as he remains in the channel.
*Operator: the Operator in a channel as the power to kick others from the channel, or to kick them and ban them from reentering. An account banned from a channel by an Operator will remain banned as long as the Operator remains in the channel. Operator-only commands may be found on the battle.net chat command page.