A 1995 article written in The Georgetown Law Journal titled "Marketing Pornography on the Information Superhighway: A Survey of 917,410 Images, Description, Short Stories and Animations Downloaded 8.5 Million Times by Consumers in Over 2000 Cities in Forty Countries, Provinces and Territories" by Martin Rimm, a Carnegie Mellon University graduate student, claimed that (as of 1994) 83.5% of the images on Usenet newsgroups where images were stored were pornographic in nature.
Before publication, Philip Elmer-De Witt used the research in a Time Magazine article, "On a Screen Near You: Cyberporn." Godwin recounts the episode in "Fighting a Cyberporn Panic" in his book Cyber Rights: Defending Free Speech in the Digital Age.
There are several forms of sites delivering adult content.
This was possible in the late '80s and early '90s through the use of anonymous FTP servers and through the Gopher protocol.
At this time the internet was mainly an academic and military network and there was not widespread use of the internet.
Some free websites primarily serve as portals by keeping up-to-date indexes of these smaller sampler sites.
These intents to create directories about adult content and websites were followed by the creation of adult wikis where the user can contribute their knowledge and recommend quality resources and links.