As an interaction designer it's weird saying this, but I find aspects of the G+ interface confusing. I know some posts are "public" and others are "limited" (presumably to peoples' circles), but I have no idea where to go to see public posts that aren't created by people I know.
I notice I have a much lower level of tolerance for the banal status updates of people I've never met in person than for people I know at least a little. After a few consecutive "I'm watching TV now!" posts from a stranger, I'll unfollow. Do you find you do the same? My apologies (and possible goodbyes) to those who don't know me; I'm not sure this post is worth reading.