Your feed, on steroids : add a custom footer to RSS items with, for example, a copyright notice, a “Read More (400 words)” links, an “Add to del.icio.us” link, a list of related entries, or anything really (even custom PHP functions). Compatible with Feedburner or similar services.
Improve connectivity between your feed and your site !!
For documentation and tips, please refer to the official plugin page for <a href="http://planetozh.com/blog/my-projects/wordpress-plugin-better-feed-rss/" title="Better Feed" rel="nofollow ugc">Better Feed</a>

Ozh' Better Feed

Your feed, on steroids : add a custom footer to RSS items with, for example, a copyright notice, a "Read More (400 words)" links, an "A …

This fun plugin just replaces the “Excerpt” meta-box with something more meaningful for the Modern Redditor.
Oh, also, it’s a neat example of custom string replacement using a filter over gettext 🙂
<h3>Support</h3>
On <a href="https://github.com/ozh/too-long-didnt-read" rel="nofollow ugc">Github</a>. I don’t read WordPress support forums.

Ozh' Better Feed vs TL;DR