While I don't follow that definition so strictly – I've always been one to silently observe and pick and choose qualities that I'd like to attain, and then copy particular 'role models' without necessarily asking for a more formal relationship – I did start collecting people whom I want to learn some particular quality from into a circle. Potential mentors, you could say. And then I realized: This wasn't a circle I could share. Some of those people were G+ lurkers. Others were using G+ as a Twitter-crosspost-outlet or Reader-sharing-outlet without actually engaging in conversation. So I removed them and was left with a circle of people whom I want to learn something from, who post insightful content and who respond to conversations actively. And that, fellow readers, is this circle.
Since these people happen to also be 'big noisy people' on the most part, I expect you are already following some of them. If not, feel free to meet and greet, and/or guess what I'm trying to learn these days. 🙂
I'll share a second circle, one with my favorite 'not-so-noisy' people to read based on content quality, later – again, as an attempt to counter the trend of sharing circles with too much noise.