P. Chandra

Adds copyright notice at end of articles in full text RSS feeds, with back links to the blog and original article.
A notice gets attached at the bottom of feed articles like this 
Original Article: Title of Article (linked to permalink) 
Copyright Year. Blog Title (linked). All Rights Reserved
Your Blog title is linked to your blog Url. Your article title is linked to the article permalink.
Blog copyright notices are important as your feed gets freely distributed across the web and is republished without permission by RSS scrappers and autoblogs. After using this plugin, now RSS scrappers will link back to your site, which will suggest to search engines that your blog and article was the original source.

Simple Feed Copyright

Adds copyright notice at end of articles in full text RSS feeds, with back links to the blog and original article.

SP developer

Syndicate Press lets you include RSS, RDF or Atom feeds directly in your WordPress Posts, Pages, Widgets or anywhere in your theme. Syndicate Press features an easy to use admin page and includes great features such as feed caching, filters and numerous display options.
Unlike a number of other news syndication plugins for WordPress, Syndicate Press does not force arbitrary formatting or CSS styling on the feed contents. This allows the feed items to be displayed in your site like they are a fully integrated part of your content.
Syndicate Press is actively maintained and regularly updated with new features and enhancements. The Syndicate Press development team at <a href="http://henryranch.net/software/syndicate-press/" rel="nofollow ugc">henryranch.net</a> has focused on ease of use, performance, stability and functionality to bring you a great plugin that will help keep your WordPress site up to date with the latest in news feeds from every corner of the world.
<h3>Arbitrary section</h3>
Please see the following pages for examples of the syndicated news feeds on a WordPress blog:
Usage information: http://syndicatepress.henryranch.net/documentation/usage/

Syndicate Press

Syndicate Press lets you include RSS, RDF or Atom feeds directly in your Wordpress posts, pages, widgets or theme.

Simple Feed Copyright vs Syndicate Press