If you've used TwitterFeed to post updates from a blog to your Twitter account, you'll like FeedBurner Socialize. It's a new FeedBurner feature that distributes the content from a feed on Twitter.
"To get started, go to the Socialize service on FeedBurner's Publicize tab and add the Twitter account to which you would like to post items from your feed. You can take the default settings and click [Save] to start socializing immediately, or use the options we offer to customize exactly which feed items are sent to Twitter and how exactly you would like them to look. The next time you post a new item to your feed it will be sent to Twitter," mentions FeedBurner's blog.
Socialize uses Google's new URL shortener and it adds a parameter that helps you track Twitter traffic in Google Analytics.
My favorite thing about FeedBurner Socialize is that the tweet is posted immediately after I publish a blog post. That's because both FeedBurner and Blogger support PubSubHubbub, a protocol designed for near-instant notifications.