Geographical Google Juice - customize your G+ circles
Create Custom Google+ Circles if you sell in a local market.
For best results out of use of Google+ for a local company, seek out people who live in the county where you want to increase your customer base in.
If you sell widgets in Frederick Maryland, create a G+ circle of just folks who live in Frederick Maryland
When you open G+ don't "just" read the shares/ posts of EVERYBODY, you're really ONLY INTERESTED in G+ users in Frederick County Maryland.
If you add "just anybody" to your Google+ circles, your Google+ stream will be flooded by people who aren't likely to buy from you.
You want to "follow" everyone in Frederick Maryland, fill your G+ stream with exclusively Frederick Maryland people.