You will need this plugin if your blog domain is changed, this plugin will make your old domain 301 redirect to your new domain.
Adds 11 new widget areas to the Hybrid WordPress theme framework using its action hooks.
Sitewide Newsletters is a WordPress MU plugin that allows site administrators to send an email message to all users.
Personal Welcome is a WordPress plugin that allows site administrators to create and send personalised welcome messages to new users.
You can subscribe to an iCalendar or two iCalendars and display them on your page
TagGator Automatically tag to your posts so you dont have to! Tag your posts based on their contents automatically.
This plugin adds sound events for WordPress
Manager Link by Widget in your sidebar
Adds a new taxonomy called "series" to your blog that allows you to link together several posts in a series.
A very simple plugin to email your users.
This plugin detects when a comment is published from a mobile phone/browser and appends a signature to the comment.