Borne out of the sort of habits normally found in /r/dataHoarder this site is a mirror of various smaller image based subreddits, both SFW and NSFW. It exists primarily so that a record exists if the original images are removed from their third-party hosting services (like Imgur).
Posts are archived as if they were a mailing list, with each subreddit's archive split down into YYYY/MM groups - e.g. /r/cosplaygirls 2018/08. Within each of thse (or on the homepage) it's possible to start an automated slideshow with the "Slideshow" link at the center top of the screeen