 Merriam-Webster's dictionary traces the usage of the term back as far as 1903.Fandom as a term can also be used in a broad sense to refer to the interconnected social networks of individual fandoms, many of which overlap.There are a number of large conventions that cater to fandom in this broad sense, catering to interests in film, comics, anime, television shows, cosplay, and the opportunity to buy and sell related merchandise.