Magento Adding New Order RSS to Google Reader without Authentication
If you wish, Magento will automatically notify you via RSS Feed of the creation of all new Orders, whether created in front-end the or the admin. In order to use this RSS feed, navigate to Sales > Orders, and click the New Order RSS link at the top of the page. You will be prompted to enter your User Name and Password. These are the same that you use to access the Magento admin panel. You will be redirected to the RSS page, where you can select which reader you would like to use for receiving this feed.
Google does not support password protected feeds. So we need to register our feed with
http://freemyfeed.com/ . This will convert RSS feed into a normal feed so that we can add this feed to Google reader.
For SSL you have another link on the site where you can generate normal feed