1. You must login to Digg, then click SETTING.
2. After that, there you need to click IMPORT FEEDS.
Type your Feed URL and click Add Feed. You can also insert your feedburner feed. You have to verify that you have permission to make auto-submit content from the blog to digg. So, you need to put the key into your RSS feed. I prefer to make a post that the title post is the key. And the last step is click VERIFY
