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.
Add Moodmixer affiliate product sliders(javascript/flash banners) to your weblog article using shortcodes, widgets or a template function.
This plugin converts text entered in the Scrippet format to properly styled HTML.
Randomize the posts from your Home and Archive page everytime the visitor load the page
Automatically adds keywords and description meta tag on every page based on rules that draw information from title, tags, categories etc
This plugin forces your writers to only use one category for each post by enabling the category meta box to use radio buttons instead of check boxes.
The Auto Delete Posts plugin can be used to delete or move all posts after an expiration date has elapsed.
Add Google AJAX Translation to your blog. This plugin allows your readers to translate your blog posts, pages, or comments into 52 languages.