Instant Messaging

Intro
Instant messaging is a type of online chat that arrives at the recipient instantly and is available as soon as the message has been sent.

Usages:
To provide a way of communication between people instantly and efficiently.

Examples:
·     Facebook Messenger

·     MSN

·     Skype

Advantages:
·     The message is instantly sent to the recipient and allows them to reply too, so makes a conversation.

·     Supports multiple users to send and receive messages in a group fashion.

Disadvantages:
·     Not 100% safe

·     Can be used for online predators.