Where does Danbooru come from?
The website Danbooru is shrouded in mystery. Not a whole lot is known about who created it and when its exact launch date occurred. Internet archives establish 2006 though reports date it to 2005 before a wipe and reboot of the site.
What is agreed upon, though, is that the word danbooru is said to mean “cardboard box” in Japanese—booru itself a rendering of the English "board" and punningly extended to message boards.
What is also agreed upon is that much of the artwork users share on Danbooru is erotic fan or self-published art, called doujinshi in Japanese manga and anime culture.
Danbooru's system allows users to create and rate various tags corresponding to particular franchises, characters, or, more often, specific features of those characters (e.g., drawings of characters with puffy short sleeves).
Several spinoff booru galleries have emerged, including Safebooru, another image-based site without the sexually explicit nature of the original. Other popular boorus include Gelbooru and FurryBooru's e621, the latter catering to extreme adult content.
Who uses Danbooru?
Danbooru is the domain for fans of various manga and anime who seek a sexy, even raunchy twist on their favorite characters and franchises. Should someone be in the mood for, say, some kinky My Little Pony or Pokémon, Danbooru's got you covered. Just make sure all monitors are turned away from any prying eyes.
i accidentally clicked my danbooru tab and there were like 6 foot fetish pics on the front page wtf
— Mahou Shoujo Emma🎀@AX2018 (@GetBefriended) June 19, 2018
In internet culture, Danbooru has a reputation for being too picky, and therefore limited, in its available images, known for strictly insisting upon non-commerical materials.
It also has had some authorship and attribution controversies, with users failing to get permission from artists to post their work. Many Danbooru users, though, frown upon artists posting their own work, as it could bias their ratings.
Junko #danganronpa cosplaying as Junko #touhou #art #danbooru #anime #Waifu #AnimeGirl #AnimeArt.
@WithCritic, April, 2018
>this is one of the two pics under the austria-hungary tag on danbooru /
@FN_CAL_Fan, April, 2018
And as far as English audiences go, Danbooru is one of the best outlets around for cartoon porn to date.
The Daily Dot, May, 2018