What is a Google + community? Somehow, we can compare it to Facebook group. There are more advantages to use a community rather than a Facebook group. People who are on Google + are not the same people as on Facebook. With communities, you can sort your publications by subject, so it becomes faster for people to get access to them.
With Google +, you can put your people into different categories called circle, therefore when you display a new publication, you can also share it with targeted people.
You have a specialty in your business, so create a specific community, target lots of people and invite them to join your community. We are in the beginnings of the communities and this is why the time is now to create one. People are searching in Google and when they arrive in the community section, they are looking for them with specifics keywords. So if yours appears now, since there are not a lot of communities yet, and especially if you expand it to the maximum, imagine the impact in a few months when already lots of communities will be created. Who will people go see? Often, it will be the most popular!
Go to your Google + account and start now your own community.
To your authentic success
PS: I invite you to join my community at: http://www.gplus.to/SocialMediaInBusiness