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.
This is a tiny, lightweight plugin I wrote to use the new native tagging from WordPress 2.3+ to automatically create a meta-keyword-tag for my blog.
Move comments between posts or pages.
GZippy re-enables gzip compression under WordPress.
Paged Comments enables comment paging. Useful for those popular blog entries receiving many comments, or a simple guestbook page within WordPress.
Add more than 25 types of video in your sidebar. Only video Id is required (no HTML code to paste).
Easy move comments from a post/page to another.
Easily upload and publish video in your WordPress blog.
Always deliver the latest version of your CSS stylesheet to browsers. All caching problems solved.