The latest plugin that I’ve installed is ST_AddRelated2Feed, this plugin allows you, like the name says, to add a list of related post to your RSS feed. You must have Ultimate Tag Warrior installed and activated, but this will allow those reading your RSS feed to get links to other post on your blog. Great Plugin a must have!
Just an FYI, WordPress for the last couple versions has had the nofollow rule on all comments. This was started to try to fight spam. I check my Blog enough and the spam filter works great that i’ve installed a plugin called, DoFollow, it stops the nofollow on my comments, so share in the link love 
What is the nofollow rule?
By adding rel=”nofollow” to a hyperlink, a page indicates that the destination of that hyperlink SHOULD NOT be afforded any additional weight or ranking by user agents which perform link analysis upon web pages (e.g. search engines). Typical use cases include links created by 3rd party commenters on blogs, or links the author wishes to point to, but avoid endorsing.