For some time, Google Feedburner makes it easy to share your RSS feed on Twitter. It can be easily done with these steps:
1. Connect to your Feedburner account, and select your feed
2. Select “Publicize” tab

3. Enter the name of your Twitter account with “Add a Twitter account” button

You’re done! Note: URLs to your pages will look like “goo.gl/webpage” inside Twitter.
