The author seems too optimistic in many occasions. Case in point: "You don’t need Quora, if you can ask detailed questions in G+ and share them with specific Ci

The author seems too optimistic in many occasions. Case in point: "You don’t need Quora, if you can ask detailed questions in G+ and share them with specific Circles, etc." doesn't really resonate with me. Many of these platforms(stackoverflow, metaoptimize, quora) rely on the expertise of strangers.