Here is more than anyone can possibly remember about ig Chat and it's related commands:

VOICE EMOTE LIST

Enter these in your chat window for the desired effect:

/v help
/v inc
/v charge
/v flee
/v attack
/v oom
/v fol
/v wait
/v heal
/v cheer
/v fire
/v rasp

GENERAL COMMANDS

Note that you can cycle through commands with similar starting letters by typing, for example, /a> and then hitting the tab button to cycle through the commands that start with a.

/bind - Gives your current bind location.
/cast * - Allows you to cast spells by name.
/chat, /chathelp - Lists the chat commands.
/follow, /f - Causes your character to follow the selected player.
/ghelp - Lists the guild commands.
/party , /p - Sends a message to party chat.
/r - Sends a reply to the last person who sent you a tell.
/say , /s - Sends a message to people near you.
/who - Lists the players online.
/yell , /y - Yells a message to the area around you.
/em - Creates an emote. See Emotes for more info.
/played - Reports the amount of time you've played the game with that character.

* Type /cast (spell subtext) - Example: "/cast Fireball (Rank 1)". To add spell casting to a macro you can type it manually or shift-click a spell in your spell book to add the proper /cast line to the macro.

CHAT CHANNEL COMMANDS

World of Warcraft has a flexible chat channel system most likely familiar to battle.net players. Players can create custom chat channels in which to chat with friends. Players have the ability to set a password, create announcements, invite other players, ban/squelch players, and set moderators for the channel.

Type /chat or /chathelp for a list of chat commands.

/#, /c, /csay - Send text to channel # (E.G. /1 Hello!)
/announcements, /ann - toggle join/leave announcements on a channel
/afk, /dnd - Set your Away From Keyboard or Do Not Disturb flags
/ban, /unban - ban/unban a player from a channel
/chatlist, /chatwho, /chatinfo [channel] - List channels, or channel members
/cinvite, /chatinvite - invite a player to a channel
/join, /channel, /chan - Join a channel
/kick - kick a player off a channel
/leave, /chatleave, /chatexit [channel] - Leave a channel (or all channels)
/mod, /moderator, /unmod, /unmoderator - change a player's moderator status
/moderate - toggle moderation on a channel
/mute, /squelch, /unvoice, /unmute, /unsquelch, /voice - change a player's permission
/password, /pass - Change password

GUILD COMMANDS

Guild communication and management can be done through the guild commands. Players can get basic information about the guild, send guild chat messages, invite others to the guild, promote/demote them, remove them, set a message of the day, change the guild leader and even quit the guild.

Type /ghelp for a list of guild commands. Note that some commands can only be used by the guild leader.

/ginfo - Gives basic information about your guild
/g - Sends a chat message to all members of your guild
/o - Sends a chat message to all officers of your guild
/ginvite - invites another player to join your guild
/gremove - removes a player from your guild
/gpromote - promotes a player one rank within your guild
/gdemote - demotes a player one rank within your guild
/gmotd - sets the guild's message of the day
/gquit - removes you from your guild
/groster - gives an entire guild roster
/gleader - sets another player as the guild master (guild master only)
/gdisband - disbands your guild (guild leader only)

EMOTES LIST

Enter these in your chat window for desired effect. Follow a slash (/) with the command name.

Agree
Amaze
Angry
Apologize
Applaud
Applause
Beckon
Beg
Belch
Bite
Bleed
Blink
Blood
Blow
Blush
Boggle
Bonk
Bored
Bounce
Bow
BRB
Burp
Bye
Cackle
Calm
Cat
Catty
Cheer
Chew
Chicken
Chuckle
Clap
Cold
Comfort
Confused
Congrats
Congratulate
Cough
Cower
Crack
Cringe
Cry
Cuddle
Curious
Curt
Curtsey
Dance
Disappointed
Doh
Doom
Drink
Drool
Duck
Eat
Eye
Farewell
Fart
Fear
Feast
Fidget
Flap
Flex
Food
Frown
Gasp
Gaze
Giggle
Glad
Glare
Gloat
Goodbye
Greet
Greetings
Grin
Groan
Grovel
Guffaw
Hail
Happy
Hello
Hi
Hug
Hungry
Impatient
Insult
Introduce
JK
Kiss
Kneel
Knuckles
Lavish
Lay
Laydown
Lick
Lie
Liedown
Listen
Mad
Massage
Moan
Mock
Moon
Mourn
No
Nod
Nosepick
Panic
Peer
Peon
Pest
Pick
Plead
Point
Poke
Ponder
Pounce
Praise
Pray
Purr
Puzzled
Question
Raise
Rdy
Ready
Rear
Roar
Rude
Salute
Scratch
Sexy
Shake
Shimmy
Shindig
Shiv
Shiver
Shoo
Shrug
Shy
Sigh
Sit
Slap
Sleep
Smell
Smirk
Snarl
Snicker
Sniff
Snub
Sob
Soothe
Sorry
Spit
Spoon
Stare
Stink
Strong
Strut
Surprised
Surrender
Talk
TalkEx
TalkQ
Tap
Taunt
Tease
Thank
Thanks
Thirsty
Threat
Tickle
Threaten
Tired
TY
Veto
Victory
Volunteer
Wave
Weep
Welcome
Whine
Whistle
Wicked
Wickedly
Work
Wrath
Yawn
Yay

You can also make your own emotes by typing "/e" and then your desired message. Adding %t in the line will add your target to the line. For example if Streborahp had Yshundar targeted and typed /e offers %t a red balloon. The result would appear as "Streborhp offers Yshundar a red ballon" in orange text in the chat pane.

Blizzard has also been kind enough to add a voice chat feature to the existing user interface. The controls for this tool can be accessed by hitting escape then clicking on sound and voice options. Next, click on the voice tab at the bottom of the screen window.

Once you have voice chat enabled you can use this pane to adjust your setting or to disable them. It's usually polite to use the "push-to-talk" option. When using push-to-talk, your teammates can only hear you when you press an assigned key. Believe me, I've heard way too much information from players who did not make use of this feature.

To enable this feature, click on the drop down list below voice chat mode. Make sure push-to-talk is checked rather than voice activated. Click on the red bar below "Key Binding" and then touch the key you want to use as your speech key. I use "`" above the tab key. The push to talk sound is a matter of preference. I find it annoying, so I don't use it.

It is, of course, necessary to have a working microphone to speak over voice chat. If you do not have a microphone, you can still listen in to chat, but you have to type your response. Microphones are relatively inexpensive, and as you progress toward the endgame it will become increasingly imperative that you have a mic for voice chat.

Listen to feedback (literally and figuratively) from your team. You may need to adjust your setting in the user interface or your computer's master volume control.

It is very important to use appropriate etiquette when chatting in game. Keep in mind that all players must abide by the Terms of Use. Do no spam chat channels or harass other players. If you feel that you have been violated by another player, you are within your rights to report them. If you do violate Blizzard's policy, remember that you may be reported and penalized as well. The rules regarding chat are:

1. Transmit or post any content or language which, in the sole and absolute discretion of Blizzard, is deemed to be offensive, including without limitation content or language that is unlawful, harmful, threatening, abusive, harassing, defamatory, vulgar, obscene, hateful, sexually explicit, or racially, ethnically or otherwise objectionable, nor may you use a misspelling or an alternative spelling to circumvent the content and language restrictions listed above;

2. Carry out any action with a disruptive effect, such as intentionally causing the Chat screen to scroll faster than other users are able to read, or setting up macros with large amounts of text that, when used, can have a disruptive effect on the normal flow of Chat;

3. Disrupt the normal flow of dialogue in Chat or otherwise act in a manner that negatively affects other users including without limitation posting commercial solicitations and/or advertisements for goods and services available outside of the World of Warcraft universe;

4. Sending repeated unsolicited or unwelcome messages to a single user or repeatedly posting similar messages in a Chat area, including but not limited to continuous advertisements to sell goods or services;

5. Communicate or post any user's personal information in the Program, or on websites or forums related to the Program, except that a user may communicate his or her own personal information in a private message directed to a single user;

6. Use bots or other automated techniques to collect information from the Program or any forum or website owned or administered by Blizzard;

7. Harass, threaten, stalk, embarrass or cause distress, unwanted attention or discomfort to any user of the Program;

8. Cheat or utilize "exploits" while playing the Program in any way, including without limitation modification of the Program's files;

9. Participate in any action that, in the sole and absolute opinion of Blizzard, results or may result in an authorized user of the Program being "scammed" or defrauded out of gold, weapons, armor, or any other items that user has earned through authorized game play in the Program;

10. Communicate directly with players who are playing characters aligned with the opposite faction (e.g. Horde communicating with Alliance or vice versa); or

11. Impersonate any real person, including without limitation any "game master" or any other Blizzard agent or employee, nor may you communicate in the Game in any way designed to make others believe that your message constitutes a server message or was otherwise posted by any Blizzard agent or employee.