Google Docs – Google’s online word processing application, is now allows you to import files from Microsoft Office 2007, including word files in .docx format and Excel files in .xlsx format. This is really a very useful improvement by Google to most people.

All you need to do to import the files is click the upload button in the Docs List menu, and select the file. Google Docs will automatically convert it.

And if you want to upload multiple files, the Google Docs List Data API allows client applications to upload documents to Google Docs and list them in the form of Google Data API feeds. Check out the Google Documents List API.