bill - 2:07 am on Nov 20, 2013 (gmt 0)
Google+ optimization isn't like SEO. It's more of a pure numbers game. Get more people to add you to their Circles, the more your message your Page sends out will be seen within the network.
It really doesn't seem matter how many accounts you Circle back. The system limits you to 5000 anyway, so if you have 60000 people Circling you you couldn't follow them all back anyway.