The Google+ followers gadget highlights your total Google+ audience (both its size and some friendly faces), and offers visitors the chance to follow you on Google+. As a result, you can grow your readership across the web, and reach them either in the Google+ stream, or through your blog.
To get started, just connect your blog to Google+, visit the "Layout" tab of the Blogger dashboard, and select "Add a Gadget." You can also read a bit more about today's update in our Help Center.
p.s. Those of you with the Google Friend Connect followers gadget can keep using it, if you like. We retired most of Friend Connect earlier this year, but we'll keep it running on Blogger for the foreseeable future.