A CDE Definition
An earlier visual chart of circles connected to each other that showed all the user's Google+ public posts that were re-shared along with the names of the Google+ members who shared them. When someone shared a post, and that post was re-shared by one of their followers, the circle got larger. See Google+.
A social networking site from Google, introduced in 2011. Although Google+ never achieved the market share of Facebook, users rank it very favorably. In 2015, its chat, video calling and photos services were separated out (see Google Hangouts and Google Photos).
Friends and families are stored in Circles, which display as circular icons on screen. In order to better engineer privacy and who sees what, all posts, photos and invitations are shared by dragging them into the appropriate Circle, which remembers the last selection. Friends, Acquaintances, Family and Following (whom you follow) are the defaults, but any Circle can be created. See Google+ Ripples, Google+ Sparks and Google.
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