A general note to social media marketers: I will find your page or group if and when I am interested in what you are promoting, talking about or selling. I will find pages through my friend connections here, articles and features, and my own curious link hopping. I will not suddenly become interested in your cause if you start following me out of the blue because you stumbled across me in a shared-interest group and added all the members to your circles.
This isn't MySpace. This isn't a contest to see who can get the most "Friends" or "Followers". This site is a way to connect genuinely with people who want to see what you're saying. And I don't.
It is a free social networking site and you are within your rights to add anyone you think fits your market niche, but I am within my rights to block you if I think you're circle-spamming.
Someone who opts out.