This extension adds a Blog This! button to the toolbar that you can click to create a new Blogger post. 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. Edit the post to your liking and post it instantly to your blog! Learn more about Blogger
To learn more about the extension, visit its homepage in the Extensions Gallery. You can discover even more extensions in the gallery.