i use a lot of google's services, including gmail and google docs. it's nice to see that they care (in some cases) about a user's freedom with respect to his or her own data.
i know some people get upset wwhen open source and open data are confused, but the principles at heart are really quite similar, and very awesome to see a company respect that and not treat users like idiot consumers.
The article says "the Data Liberation team would like to announce". I am curious, is the Data Liberation team real? It seems quite possible that Googlers would form such a intergrouplet (a Googley word for a cross-group team of volunteer collaborators). There are already intergrouplets for testing, code reuse, code readability, accessibility, and much more. If these data liberators are organized, maybe we'll see a lot more announcements like this one.