What is Infinitypedia?
Infinitypedia is currently in the process of being rebooted. Take a look at Project Infinitypedia Reboot.
Infinitypedia is a wiki that hosts many articles about fictional universes within an infinite Omniversal setting collaboratively created by its users. The goal is to create a thriving community that develops extensive shared universes together. Here, we celebrate the realm of fiction. You are encouraged to join and help contribute by expanding these universes and concepts - it's rather fun.
It was created as the official sequel to Gammapedia, a wiki mainly about a fictional universe called the Gammasphere and developed by people in a small IRC community, and is the official successor of the old Infinitypedia.