Google has rolled out a new feature called “reactions” to the experimental version of its blogging services Blogger (BlogSpot.com), that adds a user poll widget to your blog and lets you define a set of attributes like “funny”, “interesting”, “cool”, or anything else. Once setup, readers can vote for each of your posts using a button.
To enable the reactions widget, make sure you’re using experimental version of Blogger in draft mode. Then switch to the Layout settings tab for your blog and in your Blog Posts page element, click the Edit link. In the new window which opens, you’ll see the customizable reactions item.
Source:→ Google Blogoscoped