“Blog This” is a Google Chrome Extension from the Blogger team which helps you post to your blogspot blog from Chrome, with a single click.
Click the button to open Blogger in a new application window. The new post is pre-populated with a link to the web page you’re on, as well as any text you’ve highlighted on that page.
This will be really helpful for anyone using blogspot to blog from. Well, me being a wordpress fan, should look for a new wordpress “blog this” extension ? 
Install the extension from here
Why my ‘blog this’ chrome extension is not working to day?