WordPress.org

Author: Topsy Labs

The Topsy Plugin for WordPress provides the following features:

• A Twitter retweet button that shows tweet counts and allows retweeting.
• Highly customizable buttons can be displayed in various colors.
• Automatic URL shortening using bit.ly, tr.im, and others including support for your own shortener API key or username where available.
• Option to add tweets as comments or trackbacks.
• Designed for high volume sites.
• Displays Topsy TopLinks badges for posts that are in the Topsy Top5k or above - http://labs.topsy.com/toplinks
• Topsy doesn't delete old tweets, so the plugin will work on all of your historical posts.
• Free analytics via Topsy trackback pages - for example, see http://topsy.com/tb/www.techcrunch.com or http://topsy.com/tb/www.techcrunch.com/2009/11/03/topsy-twitter-bit-ly-tweetmeme-retweet/
• Allows you to choose the username used as the source for retweets from your blog - e.g. "RT @<your Twitter account> ..."
• Buttons can be placed on main blog page, static content page, individual entries, category listings, and archive pages.
• Small and large size buttons and button position customization via settings, shortcodes, and manual positioning.
• Supports WordPress 2.0, PHP4 and above.