Google announced that if you have your Blogger blog linked to your Google+ profile, you can start sharing your posts more easily on Google+. When you go to post, you will be presented with a box that is prefilled with a +snippet of your post that you can share on the social network.
You can disable the prompt if you like. Just go to settings, and comments and posts. You can still share the post from the “share” link under the entry in the post list.
Google previously made it possible for Blogger in Draft users to connect their Google+ profiles to their blogs, but now that’s available to all Blogger users.
Google says the feature is just the first of many Google+ features to come to Blogger.