Many of our new themes feature a Subscribe & Connect feature which asks for your Feedburner ID to enable e-mail subscription to your blog. Here is how to find the Feedburner ID:

1. Log in to your Feedburner account
2. Click on Publicize in the main menu
3. Click on Email Subscriptions and activate it if not already active
   
4. Look at the embed code and find your ID after the ?uri=

See the screenshot below to see that the ID in this case is MagnusJepson