The Keepers of Useless Truth: Inside the Obsessive World of Hyperspecialized Internet Archivists
Somewhere on the internet, someone has spent three years meticulously documenting every flavor variant of a discontinued soda from 1997. Somewhere else, a volunteer editor is updating a wiki dedicated entirely to the lore of a game server that shut down in 2009. These people aren't doing it for money, clout, or any obvious reason — and that might be exactly what makes what they're building so valuable.