Do you know what IRC is?
I recall it is an Internet Relay Chat. An application sort of layer protocol that faciiliates communication in the form of text.
You seem to know a lot about it. I chose the topic because I don't know anything about it. 
Yeah it's the chat process that works on a client/server model. It's a network chat. It's very interesting. Do you want to now more?
Yes, please. Why is it not used anymore?
communication via private messages as well as chat and data transfer, including file sharing.
Client software is available for every major operating system that supports Internet access. As of April 2011, the top 100 IRC networks served more than half a million users at a time, with hundreds of thousands of channels operating on a total of roughly 1,500 servers out of roughly 3,200 servers worldwide. IRC usage has been declining steadily since 2003, losing 60% of its users (from 1 million to about 400,000 in 2012) and half
Internet Relay Chat
Internet Relay Chat (IRC) is an application layer protocol that facilitates communication in the form of text. The chat process works on a client/server networking model. IRC clients are computer programs that users can install on their system or web based applications running either locally in the browser or on a 3rd party server. These clients communicate with chat servers to transfer messages to other clients. IRC is mainly designed for group communication in discussion forums, called channels, but also allows one-on-one