Adding RSS Footer to Joomla! RSS
I recieved an email from a user requesting for a Wordpress RSS Footer plugin by Joost De Valk to be ported to Joomla!
After having installed it on Wordpress to see what it was, it seems to be just a simple insert of a line of text that appears on each feed's description. So it didn't seem to be of any significant to port the plugin. Also, it would only require one line of code to be added.
IMHO, it didn't seem much of an SEO benefit. Basically, it attaches a link back to your site or anything else you wish to write which will then be rendered in every post description in your RSS feeds.
However, if you want to then follow this instructions below:
Browse to /components/com_rss/ in your installed Joomla! (or a8eJoomla). Open the file rss.php and find the line 282.
The code should be:
$item_description .= '... ';
Inside the single quotes, just write in whatever you want. For example,
$item_description .= '... Posted by: <a href=" http://your_domain_name">Your_domain_name</a> ';
That should do the job.
--- EDITED ---
Sorry for the crappy code shown, got to find a module that will display code nicely. It was meant to be an URL link in HTML, :(
--- UPDATE ---
Yah! seems like the codefilter module did the trick.

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Re: "it didn't seem much of an SEO benefit"
What it's meant to do is make sure that your article has more links than the scraped article has, thus preventing scraped articles from ranking above you in the search results.
That's a good point
I never thought of it that way.