Ivy kind of took over hosting it when its original creator left the community for a while. Ivy kept a few sites like that from disappearing, and she has her own accessory site as well. Silverdawn is the Petite Pocket creator, and she's back in the community. She created the Petite Pocket and the first Princess Pony accessory guide.
The Ivy here at the Arena is the one who took over the site. She's still around, so you might be able to contact her through PM:)