I see that in my Gmail contacts there are duplicated contacts that come from Google+ as below snapshot.
I really don't want those contacts appear in my Gmail. How can I get rid of it?
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In my Gmail Contacts
I created a New Group called "GPlus".
I selected all of the Google+ contacts from "Other Contacts" and moved them to "GPlus".
Then I selected everything in "GPlus" and unchecked "My Contacts".
Now each time I follow someone in Google+, I go into "Other Contacts", move them to "GPlus", and deselect "My Contacts".
If you do it this way, everything still shows up in Circles.