Google has a *lot* of products. And for a lot of these products, you end up creating a lot of data. The data liberation front (http://www.dataliberation.org/) is run by a group of Google employees that want to make it easier to get your data into, and out of, Google's myriad of products. As employees, they are in the unique position to get the information needed to make this happen.

So far, they give instructions on how to import and export your data from over 20 of the products Google offers. If you are trying to import any data into Google, or you're trying to get any data out of Google, this is your one-stop shop for instructions.