From Bulbapedia, the community-driven Pokémon encyclopedia.
In December 2003, Pokémon Fan Universe was moved to 1&1, who were offering free 3-year hosting packages. Unfortunately, 1&1's servers were insufficient to serve Pokémon Fan Universe's visitors so in January 2004 Pokémon Fan Universe switched to a web host that was created for the sole purpose of giving away cheap webhosting. It later evolved into A Small Orange Software, and provided Pokémon Fan Universe with inexpensive - if at times unreliable - hosting until its closure.
In December 2008, Pokémon Fan Universe closed down due to Shining Arcanine having real-life commitments. Accoding to his last post, his psychologist suggested that he shut down the site. Many members tried to prevent Shining Arcanine from doing this. The member Mystic Politoed even attempted to buy the site off of Shining Arcanine. Many of the
remaining members moved to a site called Pokemon Islands, a site created by the PFU member Dragon Tamer spring 2008.