Google+ is the future of Google and marketers are slowly coming around to this. Google sees it as its core product that everything else Google wise will stem from. If you are a contribute to a blog or journalist it is particularly important to have a presence here.
If you are, looking utilise Google + a little more Maria Peagler has put together the below infographic: Google+ Branding Strategies.
If you are looking for help and advice on promoting your blog post via Google +, check this post out: 20 Tips on How to Get More People to Read Your Google Plus Posts