Free adult instant messaging
Facebook Chat is a form of instant messaging, and Twitter can be thought of as a Web 2.0 instant messaging system.
Similar server-side chat features are part of most dating websites, such as OKCupid or Plentyof Fish.
Early instant messaging programs were primarily real-time text, where characters appeared as they were typed. Modern implementations of real-time text also exist in instant messengers, such as AOL's Real-Time IM In the latter half of the 1980s and into the early 1990s, the Quantum Link online service for Commodore 64 computers offered user-to-user messages between concurrently connected customers, which they called "On-Line Messages" (or OLM for short), and later "Flash Mail." (Quantum Link later became America Online and made AOL Instant Messenger (AIM, discussed later).
This includes the Unix "talk" command line program, which was popular in the 1980s and early 1990s. While the Quantum Link client software ran on a Commodore 64, using only the Commodore's PETSCII text-graphics, the screen was visually divided into sections and OLMs would appear as a yellow bar saying "Message From:" and the name of the sender along with the message across the top of whatever the user was already doing, and presented a list of options for responding.
Some IM applications can use push technology to provide real-time text, which transmits messages character by character, as they are composed.
In 2000, an open source application and open standards-based protocol called Jabber was launched.
The protocol was standardized under the name Extensible Messaging and Presence Protocol (XMPP).
IM allows effective and efficient communication, allowing immediate receipt of acknowledgment or reply.
However IM is basically not necessarily supported by transaction control.