Passerd is a Twitter client that runs an IRC server. Just run it and point an IRC client to it, and you'll see your Twitter friends as IRC contacts, and tweets appearing as messages on an IRC channel.
Yes! You can read posts from the people you follow, post new updates to Twitter, and follow/unfollow people easily using just IRC commands.
See the USERGUIDE file for more information.
See the INSTALL file.
See the CREDITS file.