A linklist is a (frequently) categorised web list of links to so called "freesites*", but unlike TGPs, links are provided in a form of text, not thumbs.

It's still a question which form is more descriptive to a surfer, but many webmasters cite a trend that thumbs are much more productive, and simplify searching.

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.

Around this time frame, pornography was also distributed via pornographic Bulletin Board Systems such as Rusty n Edie's.

These BBSes could charge users for access, leading to the first commercial online pornography.

These sites are called a Thumbnail gallery post (TGP).

As a rule, these sites sort thumbs by category and type of content available on a linked gallery.

Sites containing thumbs that lead to galleries with video content are called MGP (Movie Gallery Post).

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 Galleries—samplings of full-sized content provided and hosted by the commercial sites to promote their site.