How can you use Google+ for business?
The Google+ page for a business is indexed faster by Google Search Engine. You can post information about your business and share strategic content. When you establish the relation between your Google+ page and website using “rel=markup” publisher, your page information shows up on the right hand side of the search results when someone looks for you on Google. This increases your visibility and customer’s trust in you.
Additionally, there are tools like Hangout which can be used quite creatively.