It’s effective if it’s included in your social media strategy. If you’re already active on Facebook and Twitter, then it doesn’t hurt you if you open a profile on Google+. Bear in mind that this is one of the biggest social networks in the world. To make most out of Google+ you should include certain things on your company page. Remember the reason is to increase traffic, so include a link to your website. Also include contact information and other things that you find suitable. To get the engagement which will result in positive things like shares and discussions, you should work with images. A post without an image will get less engagement than a post that has an image. To reach out with your message you should create circles with people that are within your target audience. Without a circle it will be like shouting out your message in front of empty seats.
There are many ways to increase website traffic on Google+
1. Create effectively your company page by using images or logo
2. Use short and catchy headlines with using targeted keywords
3. Use hashtags related your category