It seems cir­cles are curat­ed only by their cre­ator. What is some cir­cles were pub­licly list­ed with an opt-in but­ton for recip­i­ents (with an option­al approval step by the cir­cle creator). 

Here’s the exam­ple: a lot of my pho­to stream is end­less pic­tures of cute kids. Face­book friends who have friend­ed me for oth­er top­ics have to wade through that col­lec­tion. Some actu­al­ly like them – our friend­ships aren’t sin­gle issue and they appre­ci­ate glimpses of the rest of my life. But with G+ it’s my job to fig­ure out which issue friends might want to be kid pic­ture friends. I don’t want to put them on a list they don’t like and essen­tial­ly spam them. Is there any G+ fea­tures I might use?

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