So, my understanding is that the only posts that should show up in my main Stream are those created by people I've placed in a circle. Is that correct? If so, why do posts by people that are nto in a circle show up?
Note, some of these people used to be in a "Who Are You" circle, so I could occasionally check it out, but I got sick of that traffic crowding out the people I am interested in, so I deleted the circle.
GooglePlusPlus Default Circle - extension / userscript for Google+ (aka Google Plus aka G+) which adds a star next to each circle stream name. The star can be clicked to set or unset one circle stream as your default. When a default is set, going to the Stream view (which is an aggregate of all your circles) you automatically get redirected to your default stream.