You can see who people have in their circles as a whole, but not in each circle individually. It's certainly possible that someone you're ignoring will figure

You can see who people have in their circles as a whole, but not in each circle individually. It's certainly possible that someone you're ignoring will figure that out. I would imagine that's just the price you pay in cognitive dissonance for maintaining a relationship out of politeness. It's no different really from them eventually figuring out that you never invite them out to events, isn't it? I'm not sure what you mean by invisibility. The service doesn't have presence except in gchat, which works exactly like gchat anywhere else, and you can set yourself to invisible. Outside of chat, if you don't post something into someone's circle, then you're invisible to them by default. Am I missing something?