Read more at https://on.ft.com/2OjJERd<br /><br />The FT's Robin Wigglesworth looks at how more than $110bn was wiped off the value of Facebook shares after the social network warned of slowing user and sales growth.<br /><br />Filmed and edited by Donell Newkirk. Presented by Robin Wigglesworth.<br /><br />► Subscribe to FT.com here: http://bit.ly/2GakujT<br /><br />► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
