I agree with Kristen in that one of the novel features is being able to categorize people into Circles. For instance, if I was to add you, +Carolyn Kellogg
, to one of my Circles, it would be this one:
Women writers with pink hair, who like books, eat using utensils, update hair color more often than Google+, went to USC and enjoy setting desserts aflame Circle.
Circles are quite dynamic in that no matter that this particular Circle may stacked chock-full of members, there is no limit!
Now if you had a cat or cats or had access to same then that would change everything. As you know, cats are the true masters of Google+ as evidenced by the plethora of cute and fluffy photos of them. If you are blessed to have ready access to a cat and can operate the most rudimentary of imaging devices, then you would go into my:
Cat with a human about Circle.
Hope that makes it all a bit more clear for you.