While the study's authors note this increase is "smaller than conventional wisdom might predict," it's still quite significant.
Children born in the 1980s onward are also the first to grow up in a world where they have access to the Internet beginning in their teenage years, and this early exposure and access to Internet pornography may be the primary driver of the increase. Pornography is regarded by some as one of the driving forces behind the expansion of the World Wide Web, like the camcorder VCR and cable television before it.
These files could then be downloaded and then reassembled before being decoded back to an image.
One recent entry into the free pornography website market are Thumbnail gallery post sites.
These are free websites that post links to commercial sites, providing a sampling of the commercial site in the form of thumbnail images, or in the form of Free Hosted Galleriessamplings of full-sized content provided and hosted by the commercial sites to promote their site.
"Rimm's implication that he might be able to determine 'the percentage of all images available on the Usenet that are pornographic on any given day' was sheer fantasy" wrote Mike Godwin in Hot Wired. The invention of the World Wide Web spurred both commercial and non-commercial distribution of pornography.
The rise of pornography websites offering photos, video clips and streaming media including live webcam access allowed greater access to pornography.
This small image archive contained some low quality scanned pornographic images that were initially available to anyone anonymously, but the site soon became restricted to Netherlands only access. Usenet newsgroups provided an early way of sharing images over the narrow bandwidth available in the early 1990s.