August 2012: Facebook updates its app for iPhones and iPads to make it speedier and less clunky. Government clears Facebook’s Instagram deal.
September 2012: Facebook closes on Instagram deal, whose value has dropped to about $740 million, with Facebook’s falling stock price. Unlike many other acquisitions, Facebook has promised to keep it going, rather than shut it down. Facebook plans to use Instagram’s dozen or so employees to help improve Facebook’s own mobile applications.
October 2012: Facebook says it has 1 billion active users.
December 2012: Facebook rolls out a messaging app called ‘‘Poke’’ to lukewarm reviews.
January 2013: Facebook unveils a search feature that lets users quickly sift through their social connections for information about people, interests, photos and places. It’s initially rolled out to a tiny percentage of users.