In reply to “Google+ Everyone Should Use It“.
I don’t know about Circles as a privacy tool. It’s almost guaranteed that at some point (probably at multiple points), a bug will expose information from one circle to another. So I still wouldn’t say anything to a circle that I wouldn’t want going public.
One could use it to target certain groups with comments. I often make legal comments on Facebook that are only funny to people from school. But, then again, who am I to decide who would be interested in my posts? Let’s say I post a comment about a recent Supreme Court case. Sure, my school friends will probably be interested, but I bet that a number of non-law students would be, too. Coming from a different background, they might say something that nobody from school would have thought of. How am I supposed to know who will be interested in what? Tagging is a better solution to that. Let me say “This post is about ‘Law'” (or “Computers” or “Cake”) and then let my friends say “I don’t want to hear Billy talk about ‘Law’ anymore” and hide all those posts in the future.
Maybe I’m just bitter because they’re at capacity and I can’t sign in.