Those who have used Google+ for a while are aware of its powerful search functionality. With it, you can see posts shared on the Plus as well as trending content found elsewhere on the Internet.
Monitoring conversations around your brand or name is very important. It does not only allow you to know your audience better, but it also helps build stronger relationships.
The Google+ Search functionality is very powerful for that particular purpose.
To help you leverage it, I have created a short tutorial on my blog. I hope you will find it useful!