It seemed Google Circles could be an improvement on this, and the original paper discussing it suggested as much, but the implementation leaves much to be desir

It seemed Google Circles could be an improvement on this, and the original paper discussing it suggested as much, but the implementation leaves much to be desired. Shouldn't the Friends circle have more information shared than the Acquaintances circle? Close Friends might even require double mutual confirmation. (Missed schmozz's comment below, I link we are trying to say somethig similar. Google Plus's major failing is discoverability.)