A long time before internet was introduced for personal computers, a project was started at the University of North Carolina in 1979 to create a computer network communication system. It used UUCP as a transport protocol and gave people permission to use internet way before WWW was conceived. The system was created in 1980 and let people send files and mails. The originator named the entity Usenet and nowadays, after more than 30 years of its establishment, the number of people using it for sharing and sending articles has slowly increased. It is a popular discussion platform where you can share and read messages known as articles on Usenet. They are just like web forms. It is the predecessor of the email and web forms and a combination of both. Usenet has lost its appeal to users because of the rise of modern modes of communication such as email and IM.
In instant messaging, the formatting and transmission of messages is much like on Usenet. However, instant messaging has many more features and is much more convenient for personal conversations. Instant messaging has also been integrated deeply with smart-phones, which has made it much more popular.