Pat Hawks

dirtysuds

You can use this to show posts from other sites on your homepage and in your archives alongside your own sites posts. 
After you activate the plugin, any post with the post type “Link” will redirect to the first link in that posts content.

Offsite Post

This plugin automatically add links on your posts to popular social bookmarking sites. 
It is an enhanced version of Peter Harkins Sociable plugin.
<h4>Supported Bookmarking Services</h4>
100 social bookmarking services are included! Supported services are:
Ask, BarraPunto, BlinkList, Bloglines, Blogosphere News, Blogsvine, Book.mark.hu, Colivia, DZone, De.lirio.us, Design Float, Digg, DotNetKicks, Facebook, Fark, Folkd, Furl, Gamebuzz, Global Grind, Google Bookmarks, Gwar, Haohao, HealthRanker, Hemidemi, Hype, Internetmedia, Kirtsy, Klickts, LinkaGoGo, Linkarchiv, Linkarena, LinkedIn, Linkter, Live-MSN, Lufee, Meneame, MisterWong, Mixx, MyShare, MySpace, MyTagz, N4G, Netscape, Netselector, Netvouz, NewsVine, Newsrider, NuJIJ, Oneview, Print, Ratimarks, Readster, Reddit, Rojo, SEOigg, SalesMarks, Scoopeo, Segnalo, Simpy, Slashdot, Smarking, Social-Bookmarking.dk, Socializer, Socialogs, SphereIt, Squidoo, StumbleUpon, Technorati, ThisNext, Twitter, Upnews, VoteForIt, Webbrille, Weblinkr, Webnews, Webride, Wikio, Wikio DE, Wikio ES, Wikio FR, Wikio IT, Wikio UK, Wists, Wykop, XING, Xerpi, Y!GG, YahooBuzz, YahooMyWeb, blogmarks, blogtercimlap, co.mments, connotea, del.icio.us, eKudos, email, feedmelinks, newskick, scuttle, seekXL

Sociable Zyblog Edition

Automatically add links on your posts to popular social bookmarking sites.

Offsite Post vs Sociable Zyblog Edition