This plugin helps integrate your blogs twittering into Piwik (http://www.piwik.org) more tightly. Whenever you post a blog entry and Twitter Tools tweets your post, this plugin will add a “piwik_campaign=twitter” to your post’s url and then shorten it. This way, you can keep track better of the visits that come to your site following your tweets.
This plugin builds on Alex King’s Twitter-Tools plugin (https://wordpress.org/extend/plugins/twitter-tools/) and does not work without it.

Twitter Tools – Piwik Campaign Tagger

This plugin adds a "piwik_campaign=twitter" to the URL that is published by Twitter-Tools and then shortens it using bit.ly.

scibuff

Adds twitter search tags to the <a href="https://wordpress.org/extend/plugins/twitter-tools/" rel="ugc">Twitter Tools</a> 
automatic “New Blog Post” status using Twitter Tool’s <code>tweet_blog_post_url</code> hook. The plugin will 
add post tags as twitter search tags to the “New Blog Post” twitter status message (and also shorten 
the new post’s url using http://is.gd API).
Requirements
<ul>
<li><a href="https://wordpress.org/extend/plugins/twitter-tools/" rel="ugc">Twitter Tools</a> be installed and activated</li>
<li>PHP 5.2.0 or newer</li>
<li>WordPress 2.7 or newer</li>
</ul>

Twitter Tools Search Tags

Adds twitter search tags to the Twitter Tools automatic "New Blog Post" status using Twitter Tools.

Twitter Tools – Piwik Campaign Tagger vs Twitter Tools Search Tags