Some unknown person's launched Sackbook.com, a way of finding other LittleBigPlanet users, look at their levels and do other socialite, web 3.0, wired to the Matrix type stuff.
"Sackbook is a fan-site (ie not official) that lets you search, browse and attempt to make sense of the plethora of user-generated content that fills LittleBigPlanet," says the site by way of explanation.
"If Facebook, Flickr and LittleBigPlanet somehow had LittleIllegitimateOffspring, they'd probably be something like this."
It's fun. Look at it.