Instant messaging is a web-based service to exchange messages in real time between two or more people over the Internet .It is a combination of e-mail and chat room . For sending instant messages , users create a list of users with whom they wish to communicate .The messages sent through this service take less time and the delivery of messages is instantaneous. However , to send and receive instant messages , Internet connections along with instant messaging software (known as instant messengers) , such as Yahoo Messenger or MSN Messenger , are required .Instant messenger is one of the most popular Internet tools , which allows the users to communicate over the Internet through voice , live pictures , or text. It is free and faster than e-mail because instant messages can be sent to friends whether they are online or offline.It allows the users to carry multiple conversations at a time.
Usually , users send their messages in text format . However , while sending instant messages , a user can also communicate through web cam (video chatting) as well as through speakers and microphone(chatting) . In addition , one send audio or video files along with instant messages . the recipient can view the received files at that particular time or late as desired by him.
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