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

marapper

Automatically copies all posts to a LiveJournal or other LiveJournal-based blog (exclude text in shortcode [nocrosspost]smth[/nocrosspost] – buttons for it added in visual&html editors). Editing or deleting a post will be replicated as well.
Original plugin by Arseniy Ivanov, Evan Broder.

Livejournal Crossposter Remix

Automatically copies all posts to a LiveJournal or other LiveJournal-based blog (exclude text in shortcode [nocrosspost]smth[/nocrosspost] - buttons f …

WPfriends vs Livejournal Crossposter Remix