For me, circles seemed to do the opposite. Instead of blasting an update to every person on my friends list (coworkers, family, friends) I could limit the expos

For me, circles seemed to do the opposite. Instead of blasting an update to every person on my friends list (coworkers, family, friends) I could limit the exposure to a subset. This seemed like a better way to control spam in the ~3 posts I made on Google+.