Certainly, if you are using the Wordpress platform for your blog, this is so simple by using the plugins which can send posts from Blogspot to Twitter automatically, example as WordTwit 2.0 plugin. But, if you are a fan of blogspot, there are another ways for you!
This is the easiest way which you can send your articles from Blogspot to your Twitter account automatically.
First, you have to login your FeedBurner account at http://feedburner.google.com. Then, you choose the feed of your blog and choose Publicize >> Sociallize.
Here, you choose Add the Twitter Account. Then enter the username and password of your Twitter account for authorize with Google.
On the Formatting Options, you can choose the default, or customize as you want. Finally, click the Active button, then click Save. From now on, when you post the a article on your blog, the feed of blog will send this article to your Twitter automatically.