At Getsocio you can use Google Plus in two different ways:
The first option (+1 button in deal sharing area) doesn't require any fine-tuning at your end. You just need to toggle it on the Settings page of Admin section.
After you do it, every deal (past or active) will have Google "+1" button on "Share this deal" section, just as shown below.
To keep in touch with your users on Google circles, you will need to submit a Google + id. You can use your personal one, but it'd be better to set up a separate one tailored for your brand. Just a couple of steps for you to take:
Now an icon with a link to your Google+ profile will be shown in "Follow us" section down in the footer.