The con presented a keynote by culture theorist Mark Dery and published a reader about the subject.
Pornographic images had been transmitted over the Internet as ASCII porn but to send images over network needed computers with graphics capability and also higher network bandwidth.
One recent entry into the free pornography website market are Thumbnail gallery post sites.
There was a rapid growth in the number of posts in the early 1990s but image quality was restricted by the size of files that could be posted.
The method was also used to disseminate pornographic images, which were usually scanned from adult magazines.
This type of distribution was generally free (apart from fees for Internet access), and provided a great deal of anonymity.
The anonymity made it safe and easy to ignore copyright restrictions, as well as protecting the identity of uploaders and downloaders.
Internet pornography is any pornography that is accessible over the Internet, primarily via websites, peer-to-peer file sharing, or Usenet newsgroups.
The availability of widespread public access to the World Wide Web in late 1990s led to the growth of Internet pornography.
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.
A 2015 study finds "a big jump" in pornography viewing over the past few decades, with the largest increase occurring between people born in the 1970s and those born in the 1980s.
While the study's authors note this increase is "smaller than conventional wisdom might predict," it's still quite significant.
On the Web, there are both commercial and free pornography sites.