Some Wordpress plugins are often updated, which is good think. Plugins that are updated are 100% compatible with last Wordpress version and they also are the most secure possible. A plugin that has not been updated for a long time might not work with last Wordpress version and might create a security breach for you website.
FeedBack is a standard inspired by PingBack, and designed to establish relatively secure push mechanisms for feed sharing and management.
This plugin allows you add the google PageRank of your website into your blog.
Optimize your WordPress database tables with one click.
Allows users choose own password and other item when register, and put word verification in registration interface.
Standards compliant Flash video (FLV) embedding in your blog posts. Supports video sitemap generation.
Add Viewzi Site Search to your Site.
This plugin adds a box on the Write/Edit page where (any number of) links related to the post can be entered.
Displays a custom list of posts or comments.
Displays your Zune Stats on your sidebar with a choice of displaying either of the following: * Recently Played Tracks * Most Played Artists * Favou