what is mean by chatting?

[Maya]

what is chat.plz explained me

 

[d_r_siva]

Real-time conversation among computer users in a networked environment such as the Internet. After a user types a text message and presses the Enter key, the text immediately appears on the other users' computers, permitting typed conversations that are often only somewhat slower than normal conversation. A chat can be private (between two users) or public (where other users can see the messages and participate if they wish). Public chatting is conducted in “chat rooms,â€Â￾ Web sites devoted to chat, usually about a specific topic. The thousands of chat rooms now available typically use the IRC (Internet Relay Chat) protocol,

http://encyclopedia2.thefreedictionary.com/chatting

 

[WHY]

chat :- informal conversation
On the Internet, chatting is talking to other people who are using the Internet at the same time you are. Usually, this "talking" is the exchange of typed-in messages requiring one site as the repository for the messages (or "chat site") and a group of users who take part from anywhere on the Internet. In some cases, a private chat can be arranged between two parties who meet initially in a group chat. Chats can be ongoing or scheduled for a particular time and duration. Most chats are focused on a particular topic of interest and some involve guest experts or famous people who "talk" to anyone joining the chat. (Transcripts of a chat can be archived for later reference.)