The first online chat system was called Talkomatic, created by Doug Brown and David R.Woolley in 1973 on the PLATO System at the University of Illinois.It offered several channels, each of which could accommodate up to five people, with messages appearing on all users' screens character-by-character as they were typed.
Separating good information from bad information can be a challenge.
The first step to finding a good source of information is understanding who is writing the information and for what purpose.
Online chat includes web-based applications that allow communication – often directly addressed, but anonymous between users in a multi-user environment.
Web conferencing is a more specific online service, that is often sold as a service, hosted on a web server controlled by the vendor.
Patients have access to the same information that physicians use.
The primary literature (scientific journals that report the latest advances) is increasingly open-source, which means that no subscription is required.
Online chat in a less stringent definition may be primarily any direct text-based or video-based (webcams), one-on-one chat or one-to-many group chat (formally also known as synchronous conferencing), using tools such as instant messengers, Internet Relay Chat (IRC), talkers and possibly MUDs.
The expression online chat comes from the word chat which means "informal conversation".
In 2014, Brown and Woolley released a web-based version of Talkomatic.