vrypan

FFDirect will submit your posts to your friendfeed.com account the moment they are published. Some reasons to prefer FFDirect instead of using your feed:
<ul>
<li>Images included in your posts will also be submited and visible in the corresponding friendfeed entry.</li>
<li>The same applies to any link to audio (.mp3, .wav, .aac) files.</li>
<li>Your posts will appear in friendfeed the moment you publish them.</li>
<li>Google Analytics-friendly URL tagging.</li>
<li>Pulls number of friendfeed “likes” and comments under your posts.</li>
</ul>

FFDirect

FFDirect will submit your posts to your friendfeed.com account the moment they are published.

Florian

A very simple bar for outgoing links in your posts.
Features:
<ul>
<li>Feature a “DiggBar like” or “Facebook like” to all external links in your posts</li>
<li>Whitelist for links that you do not want to apply the WP Super Bar</li>
<li>Share your links easly with facebook, digg, twitter, etc…</li>
<li>You can easly edit WP Super Bar CSS from your WordPress Backend</li>
<li>You can customise text and logo.</li>
</ul>

WP Super Bar

A very simple bar for outgoing links in your posts.

FFDirect vs WP Super Bar