"It’s the same reason why the Google Documents List Data API was
created in the first place — it allows you to write an
application that can interact with Google Docs . Say for example
if you want to save the document into the database instead of a
file. Or you want to allow your users to use their documents on
Google Docs to interact with your application"
- saush.com » Downloading documents programmatically with Google Docs API
http://r8.sharedcopy.com/430pv