When asked this question, I am forced to consider two ideas:

(1) Is shape is irrelevant? Can trapezoids be social too?

(2) Facebook, Mixi, CyWorld, XiaoNei, StudyVZ, etc. are just manifestations of social networks that allow us to digitally visualize and interact via the internet. They are not themselves social circles. They are social appendages.

Concrete objects need not mingle.
Abstract Ideas mingle simply by occupying the same space. I feed my mind with new memes everyday which allows me to include new thoughts and ideas in my earlier hypothesis or theories about the world. All things social are at their base, abstract. This is why advertising has the potential to be so infectious.

The perfect circle, unlike a square has no edged walls up to obstruct the new or different. When we learn of new products or services from friends, those in our social circles, we lose our walls that obstruct the novel. This is comfortable anyway, as mental blocks tend to be undesired. Social circle is a natural phrase for expressing this free mingling of ideas and influence. This is how I think of and in social circles. I seek the mingling of ideas and influence.

Abdurrahman_OLSON_SocialCircles
(The text to the video is below.)
Two Haiku & Spoken Word

Social thought? Its rise
unclouds the mind,
spreads ideas,
we Spring to find

Bind, Grind, wring and
Unwind thoughts, feelings and
All that mushy stuff for friends and
enemies there’s only inclusion and
A circle has no edge, no exclusion and
Not but, but And, and

So—cial Circles? rise
shine sway on all
minds, ears, and eyes
they find, Shine On
By the way the song in the background is an old Okinawan (Japanese Folk song) funked up with non-traditional instruments.