A very detailed preview of Home by IGN.
"Described as "the first of its kind," Home is an avatar-based virtual neighborhood built on the shoulders of every PS3 owner who participates. Offered as a free download from the PlayStation Store, the new networked feature installs a unique icon to your XMB and then launches just like a game does. Once connected, users are able to join online games, go shopping, talk with other people, and mess around with various media types for as long as they see fit. And to be honest, it's actually pretty cool."