A few of the extras thanks to Feedburner
The Awareness API allows developers to build applications that can display, analyze and promote your feed's traffic data outside of FeedBurner. Awareness API access for your feed is disabled by default, but you can toggle its activation status here.
Creative Commons is a non-profit that offers an alternative to full copyright. With a Creative Commons license, you keep your copyright but allow people to copy and distribute your work provided they give you credit — and only on the conditions you specify here. This service attaches the appropriate Creative Commons license in your feed's XML.
Create and customize an animated banner that cycles through your feed's five most recent items. It's an easy way to promote your content anywhere you can place a snippet of HTML.
State your preference that your feed not be indexed by search engines by activating this service.
The SpringWidgets platform allows your feed content to go anywhere on the web you or others may put a snippet of HTML, such as blogs, MySpace pages, message boards, and more. Using a SpringWidget is a cool way to promote and share your work. This FeedBurner service, TheSpringWidget Skin, makes sure your logo or favorite image will appear in any SpringWidget using your feed as its content source.
Give your biggest fans another way to keep up with your blog or podcast feed by placing an email subscription form on your site.
Most web-based feed reading services will check for updates on their own time. Give 'em a push with PingShot. Choose the services you want to ping, and we'll notify them when you publish new content.