If you want to be able to upload documents to Google Docs using drag-and-drop, Google has a new application for the Mac that allows this. It's called gdocsuploader. Once you install it, it creates a new icon on your Doc. You can drag documents to the new icon, and they will automatically get uploaded into your Google Docs account (after you enter you username and password of course). You can also double click on the Doc icon which will open a file browser that allows you to select the files to be uploaded. Overall, this makes uploading documents to Google Docs much easier.