As a human being, angel, or even demon you most likely use a written or spoken language of some sort to communicate to other beings with. Blizzard of course realized this fact and included a chat system with their Battle.net service for all of your communication needs. By using the Chat Window which looks very similar to and uses very similar channel commands to the IRC, you'll have access to both public and private communication with others at all times. Just like the IRC or Yahoo chat, you'll have a field to enter text into before sending it away for all eyes to see which gives you a chance to think before you speak. Just type your message into the field and then press the enter key which places your message into the chat window for all to view. Take a look at the screenshots below to see how this works :
 
Another bonus of the Chat system is it's packed with commands and eye pleasing color codes which is always a nice addition for those chat professionals out there. Now if you'd like to view the list of all the commands available in the Battle.net Chat System please visit our Chat Commands section for a complete list. When it comes to color coding always remember that White text is general text, Blue text is Action text and Red text is private message text.
 
Please be sure to be courteous to fellow players out there and avoid spamming or using harsh words as much as possible. Now at this point you should be comfortable enough to crawl out of your hole and speak with the others, who knows you might just make a friend!