Saul Klein: Is social media past its peak?

Social media share prices took a beating at the end of this past week, with Facebook investors losing US$120 billion of share value and Twitter ones losing US$5 billion. Both of these companies lost 20 per cent of their value in a day, along with Snapchat, which lost five per cent.
Are investors waking up to what consumers already know, that social media has passed its peak? Facebook and Twitter have grown rapidly on the promise of greater connectivity. Along with the benefits, however, the dark