PixVerse is a company that specializes in creating virtual worlds that embeddable in any social network or online destination.
They were acquired by Hi5 on June 30, 2008.
Above: PixVerse Screenshot -- #1
Pix Wall is a bulletin board “wall” that users can decorate with photos from Photobucket, stickers and toys, videos, and more. As of June 2008, Pix Wall is available on hi5 and Facebook.
Above: Pix Wall Sample
hi5 Networks Enhances Real-Time User Interaction with Acquisition of PixVerse (pehub.com)