Now that Twitter offers the "official" button for sharing interesting links, it's time to add this button to your blogspot-powered blogs and stop using third-party providers.

1. Open your blog settings - "design" - "edit html".
2. Click the "expand widget templates" checkbox.
3. Locate this text: <div class='post-footer'>
4. Paste this right after it:
   <a href="http://twitter.com/share" class="twitter-share-button" expr:data-url="data:post.url" data-count="horizontal" >Tweet</a>
5. Paste this just before the closing "body" tag:
   <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>