You’ve probably never heard of Google’s Data Liberation Front, but they are an engineering team at Google whose ONLY goal is to make it easier for users to move their data in and out of Google products. We live in a web of services that want to control all of our information and NOT let it out *cough* Facebook not letting us export contacts *cough*.
So they have a funk and fun team name, but in the end this is just another Google service. It lets you easily take your data out of several Google products. So far it supports Buzz, Contacts and Circles, Picasa Web Albums, Profile and Stream. They promise support for more services and products later on; I certainly hope they get on Google Voice soon.