Official Blog: Bringing Google+ Comments to Blogger

Another step forward in Blogger/Google+ integration

"Reading and responding to comments can be one of the most rewarding aspects of blogging. Not only do they help you connect with your readers, they can also inspire later blog entries. The challenge, oftentimes, is following all the conversations around your content—on Google+, for instance, as well as on your website. So we're making things a lot simpler.
Starting today, you can bring Google+ Comments to your Blogger blog."

Official Blog: Bringing Google+ Comments to Blogger