Simple plugin to keep track of your friends posts, 
similar to the friends page of LiveJournal. Currently you can just add WordPress and LiveJournal feeds.
WORK IN PROGRESS!

WPfriends

Simple plugin to keep track of your friends posts

RikkiMongoose

If you write about somebody at Facebook or Google Plus – mark his name with an icon!
i.e. [userid type=”blogspot” id=”torvalds-family”]Linus Torvalds[/userid]
The following social networks are supported:
<ul>
<li>facebook</li>
<li>twitter</li>
<li>google_plus</li>
<li>WordPress</li>
<li>Livejournal</li>
<li>liruboy / lirugirl</li>
<li>vk</li>
<li>habrahabr</li>
<li>github</li>
</ul>

Rikki's WP Social Icons

If you write about somebody at Facebook or Google Plus - mark his name with an icon!

WPfriends vs Rikki's WP Social Icons