Resize Twenty Eleven Header is a simple plugin which allows you to resize the header in the new Twenty Eleven theme (WordPress 3.2 beta) without modifying any code.
Simple SEO Sitemap essentially goes as far as possible for you to streamline the sitemap generation process so that you don’t have to do much thinking.
IntenseDebate is a feature-rich comment system for WordPress, Blogger, Tumblr and many other blogging/CMS platforms.
Posts by Tag provides sidebar widgets which can be used to display posts from a specific set of tags.
Twitter Avatar Reloaded adds a new field to the comment form to get the user’s Twitter usrename and uses it to replace the Gravatar with their Twitter avatar when the comment is displayed.