Crosspost your messages to Juick.com
Yappd for WordPress displays yours latest yapps in your WordPress blog. DISCONTINUED
tWPtter micro-blogging plugin that allows the addition of a micro-post carrying widget or page to your blog.
WordIdentica is a plugin that creates a complete integration between your WordPress blog and your Identi.ca account.
Automatically shortens the blog post URL via knsl.net.
Automatically shortens the blog post URL via tok.pw.
Dingshow allows you to show your recent entries at a laconi.ca-based microbloggingservice in your WordPress-blog.
This plugin imports or posts to the Swedish microblog Bloggy.se. It's only available in Swedish and only useful for Bloggy-users. :)
Adds a "Tweet this" link to posts, shortens URLs with tr.im or TinyURL and sends the user to Twitter.com.
Send blog title and url to ngeshout.com right away after post blog.
iRate displays your latest iRateMyDay rate in your WordPress blog.
Creates a fullblown OpenMicroBlogging-compatible microblogging service.