With the Thickbox Announcement plugin you easily can set-up an announcement, which will be displayed in a thickbox (lightbox).
A simple User-Agent detection plugin that lets you easily insert icons and/or textual web browser and operating system details with each comment.
This plugin automatically add [Firebug Lite](http://getfirebug.com/lite.html) to your blog for the admin (> 7).
This plugin returns the clean url of the image taken from the get_avatar value.
Allows authors to quote Twitter updates in posts or pages using a simple shortcode. [quotetweet tweetid=123456789].
Real Estate plugin enables you to use wordpress as a property listings platform, and to have simple and accessible image galleries in your posts.
LJ Random or Recent is a WordPress widget that will display a list of Random or Recent posts depending of the type of pages that is being displayed.
AWeber Super Simple allows you to subscribe users to
an AWeber autoresponder when they register
on your blog. NOTE: ALPHA VERSION. Be careful.
A related posts plugin that works quickly even with thousands of posts and tags. Can be added automatically to the end of posts.
Plugin for displaying the latest checkins of a particular user
Reconfigures search results to display results based off of category of posts.
Allows you to save short quotations / sayings / comments to a database table and then display them randomly on your site.
Google Friendsconnect OpenID & Faces widget.
Displays Flickr photos available through public Flickr photo feeds.
Enables fancybox on all image links including BMP, GIF, JPG, JPEG, and PNG links.