What do you think "stickiness" or "user engagement" are measuring. Same metrics that ran Farmville, and the same metrics putting lootboxes in
games now.
Preaching to the choir
(In the hope that a correction is actually helpful) it's 'preaching to the choir'.
No, it's definitely 1/20th of a ream of paper.
People are already talking about social media and how it's addictive[1].
He's pointing out that the material in this article has been discussed ad nauseam and this doesn't present any new ideas.
Or perhaps how Facebook succeeded, because it happened to be more addictive than its competitors. Evolutionary mechanisms will ensure that the most successful social network is the most addictive one.