For my previous post, I just checked the box “Also send email to Your circles” when I shared to to my Google+ page to see what happens. Almost immediately got an email reply and a +1.

Google+ should give me feedback on open rates for that since I bet it’s better than merely sharing with my circles in the main feed. Not that I’m going to do it constantly, but it’s nice to know there’s an option to amp something I’m sharing if I think it’s important for a specific circle of people.