Demo @ TheSmartWorker

This plugin is by the popular Alex King. It creates an integration between your WordPress blog and your Twitter account.

The following are the functionalities built into the plugin:

• Archive your Twitter tweets
• Create a blog post from each of your tweets
• Create a daily or weekly digest post of your tweets.
• Create a tweet on Twitter when you post in your blog, with a link to the post.
• Post a tweet from the sidebar or from the WP Admin screen.
• Using API, pass your tweets to another service.

You can easily add to your sidebar using the included widget or use php code.

You can use the built-in bit.ly shortener (if you have a bit.ly account). You can also exclude which categories that you want to exclude from generating tweets from your posts. You add #hashtags in the tweets generated from your posts.

<?php aktt_sidebar_tweets(); ?>

Currently the plugin only support one Twitter account (not one account per author). If you delete a tweet in Twitter, you have to delete it in your WordPress database (using cPanel or phpMyAdmin).

Read the full readme for Twitter Tools here. I would say this is a very comprehensive plugin for Twitter integration to your blog.

You can download the plugin here.