USA Today: Twitter’s head of mergers and acquisitions, Rishi Garg, said he is leaving the nest after just a year on the job — the latest in a string of high-profile departures that has plagued the micro-blogging company since its 2013 IPO. “After an amazing ride as Twitter’s VP Corporate Development and Strategy, I’m saying farewell today,” Garg tweeted. “I’m off to pursue some exciting new projects; more soon! #staytuned.” Garg joined Twitter in May 2014 from payments company Square.