What is Cosplay?

Cosplay, short for costume play or cosplay, refers to the practice of creating and wearing costumes inspired by characters from various forms of media, such as movies, television shows, anime, manga, video games, and comics.

Worldcosplay.net: A Platform for Cosplayers

This particular page (http://worldcosplay.net/it.member.859341) seems to be related to cosplay or fan culture in some way, featuring a directory of user-submitted images and posting rules for an online community centered around cosplayers.