Some people think that Google+ can be likened with a ghost town. Despite this assertion, there are plenty of pros with Google+ and you can benefit from them, especially if you are a business. When you get +1 or shares, this will be interpreted as social recommendations by Google which in return will improve your search engine results. Also Google+ posts get indexed in such a fast pace that the term "quickly" becomes misleading. They are in fact immediately indexed to search results. If you run a local business, it will also be easier for people to find your business when they do local searches.