viperchill

ViperFeed adds a gorgeous footer to your RSS feed. This will be displayed for people who get your blog posts via email, or in an RSS reader like Google Reader and Bloglines. You can use this space for giveaways, encouraging comments, showing ads, or linking to other areas of your website.
<a href="http://www.viperchill.com/" rel="nofollow ugc">ViperChill</a>, a blog on Viral Marketing, is the creator of this plugin. If you want to take your blog to the next level, you should read this post on <a href="http://www.viperchill.com/wordpress-seo/" rel="nofollow ugc">WordPress SEO</a>.

ViperFeed

ViperFeed adds a gorgeous footer to your RSS feed. This will be displayed for people who get your blog posts via email, or in an RSS reader.

zhenech

With Sexy RSS Footer you can add everything you want to the end of every feed entry. 
Backlink to the site? Sure. 
Number of comments? Sure. 
Flattr link? Sure. 
Something totaly different? Yepp, even that!
Suggestions for more replacement variables highly welcome!

Sexy RSS Footer

Sexy RSS Footer enables you to add any possible content at the end of every feed entry. This includes variables like number of comments, author etc.

ViperFeed vs Sexy RSS Footer