Mass upload to Google Docs!
Aha! I'd been putting off putting many of my own documents online in Google Documents, not because the software wasn't up to the job of editing them, but because I couldn't bear the hassle of uploading them one by one. A Google developer has now put up a sample application demoing the Documents API - DocList Uploader, that does exactly what I needed. Just drag and drop all my bits into the window and bang, they're all on Google. Very, very cool, and hopefully just the start of more Documents functionality.