I would like to suggest the word 'encircle' to refer to adding someone to a circle or being added. Example usage: I encicled a famous person and was surprised when they encircled me back. The more verbose form works OK, but is, well, verbose and occasionally awkward.
Google Plus Post by Matthew Gray from 2011-07-03 01:15:53-0400
I've had another thought about circles this week.
I'd like to suggest that a "full circle" is a circle where every member of the circle is a member of the same circle for every other member. This is like a complete or full group, so that everyone knows that everyone will be included in every post.
With circles as they exist today on G+, I may have 20 co-workers in my Coworkers circle, and each of those co-workers may have different numbers of coworkers in their circles. They may even intentionally exclude people that they don't like even though it is supposedly a work group, and thus, our work group won't all receive all the important communications unless I originate all the threads. Make sense?