Provide your blog’s RSS feed address to TwitterFeed and they will feed your posts to twitter.

Getting started – TwitterFeed

Here’s how to get your blog (or any other RSS or Atom feed) twittering:

1. Create a new twitter user at twitter.com (or use your existing one)

   this twitter user is going to be the one posting your blog entries – twitterfeed needs to know your chosen twitter username and password so it can post your blog updates to your twitter account

2. Login to twitterfeed using your OpenID

   OpenID is a standard for providing single sign on between web sites
   You can register your own OpenID for free, or may even be able to use your existing blog ID [more]

3. Provide us with the URL for your blog’s RSS feed, and how often we should post to twitter

   Our server will check your blog’s feed at the specified interval and post any new items to your twitter account. You just sit back and relax!